Perhaps you should try some spelling variations:
luong quan » thong quan, duong qua
quang tran » quang tuan, quang trung, quang thanh
hieu soat » hieu suat, hieu hoat, hieu luat
kiem soat » kiem toan
tran van » luan van
van kiem » va kiem, van kien, van hieu
va hieu » van hieu, va dieu, va hien

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

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