Perhaps you should try some spelling variations:
minh luong » dinh luong, minh tuong, minh cuong
tinh quan » tinh quang, trinh quan, tin quan
hieu suat » hieu luat, hieu qua
luan dat » luat dat, luan dac, luan day
quan van » luan van, quan doan, quang ban
ke soat » kiem soat
quan va » quan vi, quan ha, luan va
dat ke » dan ke, dat de, dat ve

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

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