Perhaps you should try some spelling variations:
tinh luong » tinh huong, dinh luong, minh luong
luong quan » thong quan, duong qua
quang quan » quang tuan, quang uan, quan quan
trien hoat » tien hoa
hieu soat » hieu suat, hieu hoat, kiem soat
hieu luat » hieu qua
van trien » van tien, va trien, van tren
quan doi » quan tri, quan li
quan van » luan van, quan va, quan luan

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

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