Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hieu quan » hieu qua, lieu quan, thien quan
tran xuan » tran quang, tran van
hang cong » dang cong, bang cong, thanh cong
hang nong » thang long, han tong
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
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 quan - thanh tran xuan ((hang cong) OR (hang nong)) dan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quan - thanh tran xuan ((hang cong) OR (hang nong)) dan ((toan cau) OR (toan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu quan - thanh tran xuan ((hang cong) OR (hang nong)) dan ((toan cau) or (toan cao))*".