Perhaps you should try some spelling variations:
quan thanh » ban thanh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
van thanh » ban thanh, van tuan
van than » van thang, van tuan, van phan
ban hang » ngan hang
ho hieu » ho chieu, hoi hieu, nho hieu

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 lang - hanh tinh ((quan thanh) OR (van thanh)) cong ((van than) or (ban hang)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh tinh ((quan thanh) OR (van thanh)) cong ((van than) OR (ban hang)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh tinh ((quan thanh) OR (van thanh)) cong ((van than) or (ban hang)) ban".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh tinh ((quan thanh) OR (van thanh)) cong ((van than) or (ban hang)) ban*.