Perhaps you should try some spelling variations:
minh luong » dinh luong, minh tuong, minh cuong
tinh dung » trinh dung, tin dung, tinh quang
hieu luat » hieu qua
lieu soan » lieu lon, bien soan, lieu quan
dung lam » dung luan, dung tai, dung dat
van hieu » cao hieu
quan vat » quan va, quan van, quan viet
quan sat » quan ha, quan tai, luan san
lam van » lam san, nam van, dam van

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 lam van hieu luat ) or ( minh luong ((quan vat) or (quan sat)) lieu soan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung lam van hieu luat ) OR ( minh luong ((quan vat) OR (quan sat)) lieu soan )).
• Adding a wildcard symbol may retrieve word variants: (( tinh dung lam van hieu luat ) or ( minh luong ((quan vat) or (quan sat)) lieu soan ))*.