Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
nhung cong » dung cong, thong cong, hang cong
van nhung » van nhuong, va nhung, van hung
tran van » luan van
cong san » cong tac
toan cao » toan tap
toan ban » van ban
bi tinh » vi tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((bi tinh) or (diep tinh)) - thanh tran van nhung cong san ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((bi tinh) OR (diep tinh)) - thanh tran van nhung cong san ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((bi tinh) or (diep tinh)) - thanh tran van nhung cong san ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho ((bi tinh) or (diep tinh)) - thanh tran van nhung cong san ((toan cao) OR (toan ban))*.