Perhaps you should try some spelling variations:
cham quoc » chuan quoc, cham soc, cua quoc
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
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: te sach ky nang x hoi. hieu ve ((cham quoc) OR (han quoc)) va hanh dai cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu ve ((cham quoc) or (han quoc)) va hanh dai cua tre*.