Store Procedure For Searching

Hi I have created one store procedure which containts multiple if statement . I have create this for searching .
Here is store procedure

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SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO


ALTER PROCEDURE School_Alumni_Search
    -- Add the parameters for the stored procedure here
    @Name nvarchar(30),
    @Batch_Year nvarchar(30),
    @Course_Done nvarchar(30)
   
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT OFF;

    -- Insert statements for procedure here
    IF @Name=''
   
        SELECT   
                 dbo.User_Login.First_Name,
                 dbo.User_Login.Last_Name,
                 dbo.User_Login.City,
                 dbo.User_Login.Phone_Number,
                 dbo.User_Login.Email,
                 dbo.School_Alumi_Registration.Year_of_Joining,
                 dbo.School_Alumi_Registration.Year_of_Leaving,
                 dbo.School_Alumi_Registration.Batch_Year,
                 dbo.School_Alumi_Registration.Course_Done,
                 dbo.School_Alumi_Registration.Photo_Image

        FROM        
                 dbo.User_Login INNER JOIN
                 dbo.School_Alumi_Registration ON dbo.User_Login.Login_ID = dbo.School_Alumi_Registration.Login_Id
        WHERE     dbo.School_Alumi_Registration.Batch_Year=@Batch_Year and dbo.School_Alumi_Registration.Course_Done=@Course_Done
        print '1'
            return
   
    IF @Batch_Year=''
   
        SELECT   
                 dbo.User_Login.First_Name,
                 dbo.User_Login.Last_Name,
                 dbo.User_Login.City,
                 dbo.User_Login.Phone_Number,
                 dbo.User_Login.Email,
                 dbo.School_Alumi_Registration.Year_of_Joining,
                 dbo.School_Alumi_Registration.Year_of_Leaving,
                 dbo.School_Alumi_Registration.Batch_Year,
                 dbo.School_Alumi_Registration.Course_Done,
                 dbo.School_Alumi_Registration.Photo_Image
        FROM        
                 dbo.User_Login FULL OUTER JOIN
                 dbo.School_Alumi_Registration ON dbo.User_Login.Login_ID = dbo.School_Alumi_Registration.Login_Id
        WHERE     dbo.User_Login.First_Name Like'%'+@Name+'%' and dbo.School_Alumi_Registration.Course_Done=@Course_Done

        print '2'
        return
   

    IF @Course_Done=''
   
        SELECT   
                 dbo.User_Login.First_Name,
                 dbo.User_Login.Last_Name,
                 dbo.User_Login.City,
                 dbo.User_Login.Phone_Number,
                 dbo.User_Login.Email,
                 dbo.School_Alumi_Registration.Year_of_Joining,
                 dbo.School_Alumi_Registration.Year_of_Leaving,
                 dbo.School_Alumi_Registration.Batch_Year,
                 dbo.School_Alumi_Registration.Course_Done,
                 dbo.School_Alumi_Registration.Photo_Image
        FROM        
                 dbo.User_Login FULL OUTER JOIN
                 dbo.School_Alumi_Registration ON dbo.User_Login.Login_ID = dbo.School_Alumi_Registration.Login_Id
        WHERE     dbo.User_Login.First_Name Like'%'+@Name+'%' and dbo.School_Alumi_Registration.Batch_Year=@Batch_Year

        print '3'   
            return
   
   

    IF @Batch_Year='' and @Name=''
   
        SELECT   
                 dbo.User_Login.First_Name,
                 dbo.User_Login.Last_Name,
                 dbo.User_Login.City,
                 dbo.User_Login.Phone_Number,
                 dbo.User_Login.Email,
                 dbo.School_Alumi_Registration.Year_of_Joining,
                 dbo.School_Alumi_Registration.Year_of_Leaving,
                 dbo.School_Alumi_Registration.Batch_Year,
                 dbo.School_Alumi_Registration.Course_Done,
                 dbo.School_Alumi_Registration.Photo_Image
        FROM        
                 dbo.User_Login FULL OUTER JOIN
                 dbo.School_Alumi_Registration ON dbo.User_Login.Login_ID = dbo.School_Alumi_Registration.Login_Id
        WHERE     dbo.School_Alumi_Registration.Course_Done=@Course_Done
        print '4'   
    return
   
   
   

    IF @Course_Done='' and @Name=''
   
        SELECT   
                 dbo.User_Login.First_Name,
                 dbo.User_Login.Last_Name,
                 dbo.User_Login.City,
                 dbo.User_Login.Phone_Number,
                 dbo.User_Login.Email,
                 dbo.School_Alumi_Registration.Year_of_Joining,
                 dbo.School_Alumi_Registration.Year_of_Leaving,
                 dbo.School_Alumi_Registration.Batch_Year,
                 dbo.School_Alumi_Registration.Course_Done,
                 dbo.School_Alumi_Registration.Photo_Image
        FROM        
                 dbo.User_Login FULL OUTER JOIN
                 dbo.School_Alumi_Registration ON dbo.User_Login.Login_ID = dbo.School_Alumi_Registration.Login_Id
        WHERE     dbo.School_Alumi_Registration.Batch_Year=@Batch_Year
        print '5'   
    return       
   

    IF @Course_Done='' AND @Batch_Year=''
   
    SELECT    
            User_Login.First_Name,
            User_Login.Last_Name,
            User_Login.City,
            User_Login.Phone_Number,
            User_Login.Email,
            School_Alumi_Registration.Year_of_Joining,
            School_Alumi_Registration.Year_of_Leaving,
            School_Alumi_Registration.Batch_Year,
            School_Alumi_Registration.Course_Done,
            School_Alumi_Registration.Photo_Image

    FROM    User_Login FULL OUTER JOIN
                    
           School_Alumi_Registration ON User_Login.Login_ID = School_Alumi_Registration.Login_Id
   
    WHERE     (User_Login.First_Name LIKE '%'+ @Name + '%')
   
    print '6'     
   
   
END
GO
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But its not working fine. Problem with if statements. I dont know where I did wrong.
Please suggest me better option .