Perhaps you should try some spelling variations:
chua nang » chuc nang, chua xang, kha nang
hanh dang » hanh dong, anh dang, hanh dung
van nhung » van nhuong, van hung, van phung
chu manh » ho manh, chu han, chu van
cong san » cong tac
san toan » van toan, dan toan, manh 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: theo ((chu manh) or (chua nang)) - hanh dang ((van nhung) OR (va nhung)) cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu manh) OR (chua nang)) - hanh dang ((van nhung) OR (va nhung)) cong san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu manh) or (chua nang)) - hanh dang ((van nhung) OR (va nhung)) cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chu manh) or (chua nang)) - hanh dang ((van nhung) OR (va nhung)) cong san toan ban*.