Perhaps you should try some spelling variations:
va doanh » van doanh, vay doanh, va danh
doanh va » doan va, doanh tai, doanh cua
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
ve cham » va cham, ve chat, vu cham
tu cham » toc cham, thi cham
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va
va cua » va chua, via cua, ca cua

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: su sach _ lang xa hoi. hieu ((ve cham) OR (tu cham)) luc va doanh va cua tre~.
• Adding a wildcard symbol may retrieve word variants: su sach _ lang xa hoi. hieu ((ve cham) or (tu cham)) luc va doanh va cua tre*.