Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
chuc danh » chuc nganh, thuc hanh, chuc nang
chua xang » chua nang, chuc nang, chu bang
quang van » quang ban, quan van, quang uan
san tan » van tan, san van, san tay
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 quang van ((nhung cong) OR (thong cong)) san tan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chua xang)) - nhanh quang van ((nhung cong) OR (thong cong)) san tan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) or (chua xang)) - nhanh quang van ((nhung cong) OR (thong cong)) san tan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chua xang)) - nhanh quang van ((nhung cong) OR (thong cong)) san tan tap*.