Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » dieu hanh, hien hanh, hieu van
hang cong » dang cong, hang nong, bang cong
tranh va » tranh van, trang va, trinh va
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap
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 ((((hieu manh) or (hieu nganh))) or (chieu xanh)) - canh tranh va hang cong san than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((hieu manh) OR (hieu nganh))) OR (chieu xanh)) - canh tranh va hang cong san than cao.
• Adding a wildcard symbol may retrieve word variants: ho ((((hieu manh) or (hieu nganh))) or (chieu xanh)) - canh tranh va hang cong san than cao*.