Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
doi chieu » doc hieu, ho chieu, mot chieu
dang cong » dung cong
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
doi chi » doi khi
va dang » van dang, va nang, va lang

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 (doi chi)) xanh - canh trinh va dang cong dan ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) xanh - canh trinh va dang cong dan ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doi chi)) xanh - canh trinh va dang cong dan ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) xanh - canh trinh va dang cong dan ((toan cau) OR (toan ban))*.