Perhaps you should try some spelling variations:
doanh dan » doanh van, doanh dao, doanh doanh
doanh ban » doanh bat, doanh van, doanh nhan
dang van » hoang van, hang va
hieu van » hieu va, thien van, lieu va
van cac » van hac, van cau, van bac
lang xa » lang ha, dang xay, lang van
cac toc » cac toi, cac nuoc, cac thoi
te sac » te sach, te cac, te san
toc ta » toc tay, toc thai
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((lang xa) or (dang van)) hoi. hieu van cac toc ta ((doanh dan) OR (doanh ban)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((lang xa) OR (dang van)) hoi. hieu van cac toc ta ((doanh dan) OR (doanh ban)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((lang xa) or (dang van)) hoi. hieu van cac toc ta ((doanh dan) OR (doanh ban)) cua te*".