Perhaps you should try some spelling variations:
phong cong » phong chong, thong cong, chong cong
hieu manh » chieu xanh, hieu nganh, hien hanh
van phong » van dong, hai phong
anh hang » anh hoang, anh hung, anh bang
hang van » hoang van, hang va, dang van
cong san » cong tac
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: doc ((dieu hanh) or (hieu manh)) - anh hang van phong cong san ((than cap) or (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((dieu hanh) OR (hieu manh)) - anh hang van phong cong san ((than cap) OR (thanh san)).
• Adding a wildcard symbol may retrieve word variants: doc ((dieu hanh) or (hieu manh)) - anh hang van phong cong san ((than cap) or (thanh san))*.