Lal,
1. There is no filter statement in your program.
2. "Scan for " works faster than "Set Filter"
3. If you are setting filter from the command window using 2 different statements, second filter will overwrite first. Filter should be in one statement i.e. set filter to cstudent = "QÛ06÷3FVT" and semester.cid = "R£06ñbç00.

Rakesh