Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, nhieu tang
cong lang » cong vang, cong luong, cong quang
cong san » cong tac
khan cap » khan ap, than cap, khoan cam
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 - thanh cong thanh thang ((cong san) OR (cong lang)) khan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh cong thanh thang ((cong san) OR (cong lang)) khan cap".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh cong thanh thang ((cong san) OR (cong lang)) khan cap*.