Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
huong cong » luong cong, duong cong, cuong cong
ho chieu » hoc thieu, doi chieu, mot chieu
van tinh » van thinh, van minh, van dinh
ban tinh » ban thanh, quan tinh, ban hanh
cong san » cong tac
san than » sang than, san thanh, ban than
than man » than ma, thanh san, tran manh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo chieu)) xanh - hanh ((van tinh) or (ban tinh)) huong cong san than man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - hanh ((van tinh) OR (ban tinh)) huong cong san than man.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) xanh - hanh ((van tinh) or (ban tinh)) huong cong san than man*.