Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu sach » tu sach, thuoc sach, thu hoach
hanh dai » hanh tai, hanh dao, vanh dai
va chat » van chat, va phat, cao chat
cua tre » cua te, cuu tre, cua triet
goc va » hoc va, doc va, uoc va
loc va » hoc va, luc va
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: ((thu sach) or (thuat sach)) ky nang x hoi. lieu va chat ((goc va) or (loc va)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) ky nang x hoi. lieu va chat ((goc va) OR (loc va)) hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) ky nang x hoi. lieu va chat ((goc va) or (loc va)) hanh dai cua tre*.