Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
trang va » tran van, hang va
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, van than, dang thanh
ban than » ban thanh, van thanh, ban hang

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 - hanh trang va nhung cong ((dan toan) or (((dan than) OR (ban than)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh trang va nhung cong ((dan toan) OR (((dan than) OR (ban than)))) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh trang va nhung cong ((dan toan) or (((dan than) OR (ban than)))) cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh trang va nhung cong ((dan toan) or (((dan than) OR (ban than)))) cau*.