Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh han » trinh quan
han nhung » hanh nhung, hon nhung, ban nhung
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 - hanh trinh han nhung cong ((xuan toan) or (dan than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh trinh han nhung cong ((xuan toan) OR (dan than)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh trinh han nhung cong ((xuan toan) or (dan than)) ban*.