Perhaps you should try some spelling variations:
quang quan » quang tuan, quang uan, quan quan
dung quang » dang quang, dung quan, luong quang
dung land » dung luan, dung lam, dung san
hieu luat » hieu qua
dinh dung » dinh duong, dinh hung, tinh dung
quan tren » quan trong, quang tran, quan tri
tren hoat » trien hoat, trong hoat, thien hoat
land van » lang van, lan van, luan van
van hieu » cao hieu
tin » tinh

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 land van hieu luat ) or ( dinh dung quang quan tren hoat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung land van hieu luat ) OR ( dinh dung quang quan tren hoat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung land van hieu luat ) or ( dinh dung quang quan tren hoat ))*.