Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
doi chieu » doc hieu, doi chi, mot chieu
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, mot chieu
trinh va » trinh van, trinh vat, trinh ve
cong tac » cong ty
phat cau » phan cau, phap cau, phat am
va hang » van hang, va nang, va lang
pha cau » phan cau, phap cau, pha cac

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