Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
van doanh » toan doanh, van dong, van thanh
hieu van » hieu va, thien van, lieu va
lang van » dang van, tang van, hoang van
van cac » van hac, van cau, van bac
toc van » hoc van, toc san, tac van
cac toc » cac toi, cac nuoc, cac thoi
te sach » toc sach
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay
cua tu » cua tuc, cua su, cua cu

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 ty ((lang xa) OR (lang van)) hoi. hieu van cac toc van doanh dan ((cua te) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((lang xa) OR (lang van)) hoi. hieu van cac toc van doanh dan ((cua te) or (cua tu))~".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((lang xa) OR (lang van)) hoi. hieu van cac toc van doanh dan ((cua te) or (cua tu))*.