Perhaps you should try some spelling variations:
sach tham » sach nha
tham xang » tham lang, nham nang, pham hang
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
xang xa » lang xa, mang xa, ang xa
van cau » van dau, van hau, van chat
cua tre » cua te, cuu tre, cua triet
xac va » tac va, ac va, bac va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di 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: so sach tham xang xa hoi. hieu van cau ((xac va) OR (tuc va)) hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: so sach tham xang xa hoi. hieu van cau ((xac va) or (tuc va)) hanh vi cua tre*.