Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
chan dan » chan doan, chan dang, nhan dan
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
phan dau » phan tu, hang dau
va dung » van dung, va duong, vat dung
dan va » doan va, dan ca, ban va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) OR (theo tieu)) sang - chan dan va dung ((cong tan) or (cong san)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sang - chan dan va dung ((cong tan) OR (cong san)) phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo tieu)) sang - chan dan va dung ((cong tan) or (cong san)) phan dau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo tieu)) sang - chan dan va dung ((cong tan) or (cong san)) phan dau*.