Perhaps you should try some spelling variations:
dinh luong » dinh duong, dinh huong, dinh cuong
tinh nang » trinh nang, tin nang, tich nang
nang quan » ban quan, nang suat
hieu soat » hieu suat, hieu hoat, hieu luat
quan van » luan van, quan luan, quan doan
van hieu » cao hieu
quan va » quan vi, quan ha, luan va
tra » tran

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh nang quan van hieu soat ) or ( dinh luong ((quan van) or (quan va)) kiem tra ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh nang quan van hieu soat ) OR ( dinh luong ((quan van) OR (quan va)) kiem tra )).
• Adding a wildcard symbol may retrieve word variants: (( tinh nang quan van hieu soat ) or ( dinh luong ((quan van) or (quan va)) kiem tra ))*.