Perhaps you should try some spelling variations:
chuc danh » chuc nganh, thuc hanh, chuc nang
chua xang » chua nang, chuc nang, chu bang
van nhung » van nhuong, va nhung, van hung
cong vang » cong lang, cong quang, cong ngang
anh dang » anh dong, anh dung, anh bang
dang van » hoang van, hang va
cong van » cong san, song van, cong tan
ban tap » bai tap, han tap, ban tai

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)) - anh dang van nhung ((cong van) OR (cong vang)) ban tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chua xang)) - anh dang van nhung ((cong van) OR (cong vang)) ban tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) or (chua xang)) - anh dang van nhung ((cong van) OR (cong vang)) ban tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chua xang)) - anh dang van nhung ((cong van) OR (cong vang)) ban tap*.