Perhaps you should try some spelling variations:
luong quan » thong quan, duong qua
tinh luong » tinh huong, dinh luong, minh luong
hieu luat » hieu qua
kien soat » kiem soat, bien soan, kien hoa
dung lan » dung luan, dung land, dung lam
van hieu » cao hieu
lan van » luan van, lang van, tan van
quan va » quan vi, quan ha, luan va
va kien » van kien, va lien, va dien

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

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