Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
va dang » van dang, va lang, da dang
va nang » van nang, da nang, cam nang

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: theo chieu xanh - canh tranh ((va dang) OR (va nang)) ((cong dan) OR (cong tan)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - canh tranh ((va dang) OR (va nang)) ((cong dan) or (cong tan)) toan ban~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - canh tranh ((va dang) OR (va nang)) ((cong dan) or (cong tan)) toan ban*.