Perhaps you should try some spelling variations:
quang thanh » quan thanh, hoang thanh, muong thanh
huong lquan » luong quan, cuong quan, vuong quan
lquan van » luan van, quan van, luan va
hieu suat » hieu luat, hieu qua
thanh van » thanh san, thanh toan, thanh phan
kiem soat » kiem toan
van hieu » cao hieu
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: (( anh huong lquan van hieu suat ) or ( tinh quang thanh van ((kiem soat) or (kiem tra)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( anh huong lquan van hieu suat ) OR ( tinh quang thanh van ((kiem soat) OR (kiem tra)) )).
• Adding a wildcard symbol may retrieve word variants: (( anh huong lquan van hieu suat ) or ( tinh quang thanh van ((kiem soat) or (kiem tra)) ))*.