Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
anh lai » anh bai, anh tai, gianh lai
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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: ((toc sach) OR (hoc sach)) y nang x hoi. ((hieu ve) OR (hieu va)) cam xuc van anh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) y nang x hoi. ((hieu ve) or (hieu va)) cam xuc van anh lai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (hoc sach)) y nang x hoi. ((hieu ve) or (hieu va)) cam xuc van anh lai cua tre*.