Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
chuc danh » chuc nganh, thuc hanh, chuc nang
chua nang » chuc nang, chua xang, kha nang
nhan dang » nhan dan, phan dang, tran dang
hang cong » dang cong, hang nong, bang cong
dang van » hoang van, hang va
van tan » van tuan, van ban, van tai
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 nang)) - nhan dang van ((nhung cong) or (hang cong)) van tan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chua nang)) - nhan dang van ((nhung cong) OR (hang cong)) van tan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chua nang)) - nhan dang van ((nhung cong) or (hang cong)) van tan tap*.