Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
van doanh » toan doanh, van dong, van thanh
tu sach » thu sach, su sach, te sach
may hoi » may thoi, tay hoi, mai hoi
ve cham » va cham, ve chat, ve chim
vu cham » va cham, vu kham, tu cham
luc van » luoc van, luu van, duc van
dan cua » dan ca, ban cua, dai cua
cua tre » cua te, cuu tre, cua triet
y mang » cay mang

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: tu sach y mang may hoi. hieu ((ve cham) OR (vu cham)) luc van doanh dan cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach y mang may hoi. hieu ((ve cham) or (vu cham)) luc van doanh dan cua tre*.