Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
manh tung » manh hung, thanh tung
hoc hieu » hoc thieu, hoc hien, doc hieu
va thong » va phuong, he thong, va cong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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 - ((manh tung) or (thanh cong)) ((va thong) or (va thuong)) cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((manh tung) OR (thanh cong)) ((va thong) OR (va thuong)) cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((manh tung) or (thanh cong)) ((va thong) or (va thuong)) cong tan toan ban*.