Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham xuc » cam xuc, chat xuc, cham soc
vanh dai » van dai, vanh tai, lanh dao
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va vanh » va van, va danh, va hanh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
co hoi » co hoc, co loi
xuc va » duc va, tuc va, luc va
o hoi » o hoc, o hai, o hoa

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: thu sach y nang ((o hoi) OR (co hoi)). hieu va cham xuc va vanh dai cua tre~.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((o hoi) or (co hoi)). hieu va cham xuc va vanh dai cua tre*.