Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhieu tang » chieu sang, hieu lang, nhiet nang
thanh tran » thanh trang, thanh toan, thanh tra
dang cong » dung cong
tran van » luan van
van dang » van dong, van dung, van nang
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (nhieu tang)) - thanh tran van dang cong ((dan than) OR (ban than)) cao~.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (nhieu tang)) - thanh tran van dang cong ((dan than) or (ban than)) cao*.