Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
nhieu tang » chieu sang, hieu lang, nhiet nang
tranh cua » doanh cua, manh cua
ho nhieu » hop nhieu, ho chieu, he nhieu
cua hang » cua dang, cua nhung, cua cong
cong tan » cong tac, cong ty, cong ha
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho nhieu tang - canh tranh cua hang ((((cong tan) OR (cong thanh))) or (cong san)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho nhieu tang - canh tranh cua hang ((((cong tan) OR (cong thanh))) OR (cong san)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho nhieu tang - canh tranh cua hang ((((cong tan) OR (cong thanh))) or (cong san)) van ban".
• Adding a wildcard symbol may retrieve word variants: ho nhieu tang - canh tranh cua hang ((((cong tan) OR (cong thanh))) or (cong san)) van ban*.