Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chua nang » chuc nang, chua xang, kha nang
dang cong » dung cong
chu bang » thu bang, chuc nang, chu quang
anh mang » hanh mang, anh bang, anh dang
mang cua » manh cua, dung cua, ban cua
dan van » dang van, doan van, dao van

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 bang) or (chua nang)) - anh mang cua ((nhung cong) or (dang cong)) dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu bang) OR (chua nang)) - anh mang cua ((nhung cong) OR (dang cong)) dan van ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chu bang) or (chua nang)) - anh mang cua ((nhung cong) or (dang cong)) dan van ban*.