Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
nhieu tang » chieu sang, hieu lang, nhiet nang
he nhieu » hop nhieu, phu nhieu, he dieu
tong tac » tuong tac, trong tac, cong tac
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
va han » va phan, van han, va hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: he nhieu tang - ((thanh truong) or (thanh cong)) va han tong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: he nhieu tang - ((thanh truong) OR (thanh cong)) va han tong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: he nhieu tang - ((thanh truong) or (thanh cong)) va han tong tac toan tap*.