Perhaps you should try some spelling variations:
huong lquan » luong quan, cuong quan, vuong quan
lquan van » luan van, quan van, luan va
hieu suat » hieu luat, hieu qua
kiem soat » kiem toan
van hieu » cao hieu
tuan van » luan van, tran van, quan van
tan van » tran van, tang van, luan van

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 ((tuan van) OR (tan van)) kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( anh huong lquan van hieu suat ) OR ( tinh quang ((tuan van) OR (tan van)) kiem soat )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( anh huong lquan van hieu suat ) or ( tinh quang ((tuan van) OR (tan van)) kiem soat ))".
• Adding a wildcard symbol may retrieve word variants: (( anh huong lquan van hieu suat ) or ( tinh quang ((tuan van) OR (tan van)) kiem soat ))*.