Perhaps you should try some spelling variations:
nhiet nang » nhiet dong, viet nang, nhieu tang
thanh tran » thanh trang, thanh toan, thanh tra
hieu lang » chieu sang, hieu quang, nhieu tang
tong cong » trong cong, cong cong, dung cong
tran van » luan van
van tong » van thong, van trong, van tuong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((nhiet nang) or (hieu lang)) - thanh tran van tong cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((nhiet nang) OR (hieu lang)) - thanh tran van tong cong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: doi ((nhiet nang) or (hieu lang)) - thanh tran van tong cong tan toan cao*.