Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chua nang » chuc nang, chua xang, kha nang
chu manh » ho manh, chu han, chu van
anh hang » anh hoang, anh hung, anh bang
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)) - anh hang 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)) - anh hang va nhung cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chu manh) or (chua nang)) - anh hang va nhung cong san toan ban*.