Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
chinh ban » chinh bao, chinh can, chinh ngan
nhung don » nhung van, nhung bo
dung cong » dung trong
hang cong » dang cong, hang nong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
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 - hanh chinh ban ((((nhung don) or (dung cong))) or (hang cong)) tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh chinh ban ((((nhung don) OR (dung cong))) OR (hang cong)) tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh chinh ban ((((nhung don) or (dung cong))) or (hang cong)) tinh toan ban*.