Word Search In String

Hi All,

Please help, it is urgent

I am having a colume as image datatype, in which candidates resume is stored in binary format.
I have to search for particular words for eg. "ASP.Net, 2 Years" into that column
I have converted that column as varchar and then searching above two words(after spliting them by comma) into that string using CHARINDEX


DECLARE @i int, @j int
SET @i = select MIN(ResumeId) from table_name
SET @j = select MAX(ResumeId) from table_name

WHILE (@i <= @j)
BEGIN
DECLARE @Resume varchar(max)
SET @Resume = CAST((select Resume from table_name where ResumeId=100) as varbinary(max))

--code to search the particular word from @Resume

END

It is working fine, but it is very slow, taking 2+ minutes to scan 15000 records
How can I make it faster or is there any other way to search?

Thanks in advance