Perhaps you should try some spelling variations:
nhanh mang » nhanh lang, hanh mang, nhanh quang
nhung cong » dung cong, thong cong, hang cong
chuc danh » chuc nganh, thuc hanh, chuc nang
chua xang » chua nang, chuc nang, chu bang
van nhung » van nhuong, va nhung, van hung
mang van » dang van, tang van, lang van
cong tac » cong ty
tac tan » tac can, tac van, tat tan
tan tap » toan tap, han tap, tan tat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chuc danh) or (chua xang)) - nhanh mang van nhung cong tac tan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chua xang)) - nhanh mang van nhung cong tac tan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chua xang)) - nhanh mang van nhung cong tac tan tap*.