Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chua nang » chuc nang, chua xang, kha nang
lang van » tang van, hoang van, giang van
dang van » hoang van, hang va
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((thuc hanh) or (chua nang)) - nhanh ((lang van) or (dang van)) nhung cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((thuc hanh) OR (chua nang)) - nhanh ((lang van) OR (dang van)) nhung cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((thuc hanh) or (chua nang)) - nhanh ((lang van) or (dang van)) nhung cong san toan tap*.