Perhaps you should try some spelling variations:
chat xuc » chat huu, cam xuc, chao xu
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
van dai » vanh dai, van dao, van hai
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: tu sach y nang ((o hoi) OR (co hoi)). hieu va chat xuc va van dai cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((o hoi) or (co hoi)). hieu va chat xuc va van dai cua tre*.