Perhaps you should try some spelling variations:
cuong quan » luong quan, vuong quan, luong quang
minh cuong » dinh cuong, manh cuong, minh tuong
quang tan » quang tuan, quang tran, quang toan
hieu soat » hieu hoat, hieu luat, hieu so
hieu suat » hieu luat, hieu qua
kiem soat » kiem toan
quan doi » quan tri, quan li
doi kiem » hoi kiem, doi kien, thi kiem
tan van » tran van, tang van, luan van
tinh » trinh, dinh, kinh

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

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