Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh van, doanh nhan
doanh dan » doanh van, doanh dao, doanh doanh
dang van » hoang van, hang va
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cau toc » cac toc, cao toc, cau hoc
van cau » van dau, van hau, van chat
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
toc ta » toc tay, toc thai
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((lang xa) OR (dang van)) hoi. hieu van cau toc ta ((doanh dan) OR (doanh ban)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((lang xa) or (dang van)) hoi. hieu van cau toc ta ((doanh dan) OR (doanh ban)) cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((lang xa) or (dang van)) hoi. hieu van cau toc ta ((doanh dan) OR (doanh ban)) cua te*.