Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tran dung » tran dang, tran quang, trung dung
tran hung » tran hong, tran quang, tran hoang
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai 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 ((hieu manh) or (chieu tinh)) - thanh tung ((tran dung) or (tran hung)) cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu tinh)) - thanh tung ((tran dung) OR (tran hung)) cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu tinh)) - thanh tung ((tran dung) or (tran hung)) cong tap toan cau*.