Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
tan hanh » tan thanh, tang hanh, toan hanh
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
hieu ve » hieu va, hieu van
cam duc » cam xuc, pham duc, nam duoc
cao duc » dao duc, cao suc, giao duc
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thuoc sach)) ky nang x hoi. hieu ve ((cam duc) or (cao duc)) tan hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky nang x hoi. hieu ve ((cam duc) OR (cao duc)) tan hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky nang x hoi. hieu ve ((cam duc) or (cao duc)) tan hanh dai cua tre*.