Perhaps you should try some spelling variations:
van thanh » van tuan
ban thanh » ban hanh, ban hang
cong dan » cong san, cong tan, huong dan
dan hang » ban hang, van hang, dat hang
hang dau » hang va, hang tai
ho lieu » so lieu, ho kieu, ho chieu
co lieu » cot lieu, co hieu, so lieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho lieu) or (co lieu)) tinh - canh tranh ((van thanh) or (ban thanh)) cong dan hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho lieu) OR (co lieu)) tinh - canh tranh ((van thanh) OR (ban thanh)) cong dan hang dau.
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (co lieu)) tinh - canh tranh ((van thanh) or (ban thanh)) cong dan hang dau*.