Perhaps you should try some spelling variations:
bien tinh » bi tinh, yen tinh, diep tinh
hang cong » dang cong, hang nong, bang cong
thanh cac » hanh cac, thanh bac, tranh cac
lang van » tang van, hoang van, giang van
dang van » hoang van, hang va
cong san » cong tac
thanh ca » thanh cha, thanh ha, thanh va
ho bien » pho bien, hoa bien, so bien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho bien tinh - nhanh ((lang van) or (dang van)) hang cong san ((thanh ca) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho bien tinh - nhanh ((lang van) OR (dang van)) hang cong san ((thanh ca) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: ho bien tinh - nhanh ((lang van) or (dang van)) hang cong san ((thanh ca) or (thanh cac))*.