SQL Server 2008 :: Inner Join With Complex Condition

I have Two tables @master and @child

Master Table :

MasterID EntryNumber BranchId IsstockIn
1 1 1 1

2 1 1 0

Child Table:

CEntryNumber CBranchID EntryQty
1 1 10
1 1 20
1 1 -5
1 1 -4

My Query:

Select SEC.EntryQty from Item.StockEntryChild SEC
where SEC.CEntryNo =
(
select SEM.EntryNumber from item.StockEntryMaster SEM
where SEC.CBranchID=SEM.BranchID and SEC.CEntryNo=SEM.EntryNumber and SEM.MasterID=1 and SEM.isStockIn=1
)

My Result:

EntryQty
10
20
-5
-4

Expected Result:

10
20