Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
hieu manh » chieu xanh, hieu nganh, dieu hanh
van dung » van dong, xay dung, tin dung
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cau » toan cao, toan ban, toan tap
va dung » va duong, vat dung, va ung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chiet tach)) - thanh trung ((va dung) or (van dung)) cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chiet tach)) - thanh trung ((va dung) OR (van dung)) cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chiet tach)) - thanh trung ((va dung) or (van dung)) cong tap toan cau*.