Compare between two Dates

I am Fetching data using QAWS

I am using two Combo box for two diff column (Assume Column A and B).

and one another combo box gives me Date.(assume End Date)

one more combo box gives me number which will help to find (Start Date)

now I want to filter data on this three columns (A, B and Date).

note- Dates I want to consider only between Start and End (which is one column only)

How can i do this?

Thanks in Advance