Perhaps you should try some spelling variations:
hang cong » dang cong, hang nong, bang cong
thuat ban » thuat bai, thuat bao, thuat san
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
va hang » van hang, 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: ((ho chieu) or (theo tieu)) tinh - canh tranh va hang cong tan ((thuat ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) tinh - canh tranh va hang cong tan ((thuat ban) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo tieu)) tinh - canh tranh va hang cong tan ((thuat ban) or (toan ban))*.