Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
mot chieu » doi chieu, ho chieu
khach san » khach hang, thanh san
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cao » toan ban, toan tap
san va » san van, ban va, dan va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo chieu)) sang - khach san va nhung ((cong tan) OR (cong tac)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (theo chieu)) sang - khach san va nhung ((cong tan) OR (cong tac)) toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo chieu)) sang - khach san va nhung ((cong tan) OR (cong tac)) toan cao*.