Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
van hang » van khang, van hoang, van thang
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
va hang » va nang, va lang, va hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - canh tranh ((va hang) or (van hang)) ((cong dan) or (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh tranh ((va hang) OR (van hang)) ((cong dan) OR (cong tan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh tranh ((va hang) or (van hang)) ((cong dan) or (cong tan)) toan ban*.