Perhaps you should try some spelling variations:
thanh tung » thanh cong
hien manh » hien hanh, tien manh, hieu manh
tuan dung » tuan duong, tuan dang, tuan hung
tran dung » tran dang, tran hung, tran quang
tan dung » tin dung, van dung, dan dung
cong tac » cong ty
tac trai » tam trai, khac trai, rac thai
trai cau » tra cau, trai chan, toan cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien manh - thanh tung ((((tuan dung) or (tran dung))) or (tan dung)) cong tac trai cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien manh - thanh tung ((((tuan dung) OR (tran dung))) OR (tan dung)) cong tac trai cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien manh - thanh tung ((((tuan dung) or (tran dung))) or (tan dung)) cong tac trai cau*.