Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
doi chieu » doc hieu, doi chi, ho chieu
van dang » van dong, van dung, van nang
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac
va dang » va nang, va lang, da dang

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) or (hoc hien)) xanh - canh trinh ((va dang) or (van dang)) cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc hien)) xanh - canh trinh ((va dang) OR (van dang)) cong dan than cap.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc hien)) xanh - canh trinh ((va dang) or (van dang)) cong dan than cap*.