Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
doanh bao » doanh bat, doanh ban, doanh bac
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
truc vay » truc va, truc may, truc van
te sach » toc sach
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, lang van
van cau » van dau, van hau, van chat
bao lua » bao luc, bao cua, bai luan
lua te » cua te

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 (dang xay)) hoi. hieu van cau truc vay doanh bao lua te~.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((lang xa) or (dang xay)) hoi. hieu van cau truc vay doanh bao lua te*.