Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chuc danh » chuc nganh, thuc hanh, chuc nang
chua nang » chuc nang, chua xang, kha nang
nhan dang » nhan dan, phan dang, tran dang
van nhung » van nhuong, va nhung, van hung
dang van » hoang van, hang va
van tuan » van quan, van ban, anh tuan
van tan » van ban, van tai, van thanh

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 ((van tan) OR (van tuan)) 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 ((van tan) OR (van tuan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) or (chua nang)) - nhan dang van nhung cong ((van tan) OR (van tuan)) tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chua nang)) - nhan dang van nhung cong ((van tan) OR (van tuan)) tap*.