Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
ban thanh » ban hanh, ban hang
hoc hieu » hoc thieu, hoc hien, doc hieu
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - thanh tung ((cua thong) OR (cua khong)) cong ((dan than) or (ban thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh tung ((cua thong) OR (cua khong)) cong ((dan than) OR (ban thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh tung ((cua thong) OR (cua khong)) cong ((dan than) or (ban thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh tung ((cua thong) OR (cua khong)) cong ((dan than) or (ban thanh)) cau*.