Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
van hoang » quan hoang, tran hoang, tuan hoang
van hoan » van hoa, van toan, van han
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (hieu manh)) - canh tranh ((van hoang) OR (van hoan)) cong tac than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (hieu manh)) - canh tranh ((van hoang) OR (van hoan)) cong tac than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (hieu manh)) - canh tranh ((van hoang) OR (van hoan)) cong tac than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (hieu manh)) - canh tranh ((van hoang) OR (van hoan)) cong tac than cap*.