Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
cong thong » cong thuong, cong trong, dong thong
hieu lang » chieu sang, hieu quang, nhieu tang
tuong cua » truong cua, huong cua, thong cua
cong tang » cong thang, cong lang, cong vang
cua bang » chua bang, cua ban, cua dang
cong tan » cong tac, cong san, cong thanh
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 tuong cua bang ((((cong tang) OR (cong tan))) or (cong thong)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh tuong cua bang ((((cong tang) OR (cong tan))) OR (cong thong)) van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh tuong cua bang ((((cong tang) OR (cong tan))) or (cong thong)) van ban*".