Perhaps you should try some spelling variations:
thanh truong » thanh thuong, thanh tung, thanh huong
thanh trung » thanh tung
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
dai dung » dai duong, dan dung, mai dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: ((ho chiet) or (toc thieu)) tach - ((thanh truong) or (thanh trung)) dai dung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (toc thieu)) tach - ((thanh truong) OR (thanh trung)) dai dung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) or (toc thieu)) tach - ((thanh truong) or (thanh trung)) dai dung cong tac toan cau*.