Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
chau tinh » cuu tinh, ha tinh, cua tinh
doi chau » doi chieu, gioi chau, hoi chu
trinh va » trinh van, trinh vat, trinh ve
cong tac » cong ty
toan ban » van ban
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chau tinh - canh trinh va dung ((cong san) or (cong tac)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chau tinh - canh trinh va dung ((cong san) OR (cong tac)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chau tinh - canh trinh va dung ((cong san) or (cong tac)) toan ban*.