Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chua xang » chua nang, chuc nang, chu bang
chu manh » ho manh, chu han, chu van
trang va » hang va
tran van » luan van
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: chao ((chua xang) or (chu manh)) - hanh ((trang va) or (tran van)) nhung cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chua xang) OR (chu manh)) - hanh ((trang va) OR (tran van)) nhung cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: chao ((chua xang) or (chu manh)) - hanh ((trang va) or (tran van)) nhung cong san toan tap*.