Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh dai » hanh tai, hanh dao, vanh dai
va chat » van chat, va phat, cao chat
cua tre » cua te, cuu tre, cua triet
va cham » va tham
sach v » sach va, sach y, sach 2
goc va » hoc va, doc va, uoc va
loc va » hoc va, luc va
v nang » va nang, vu nang, van nang
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: thuoc sach v nang x hoi. lieu ((va cham) OR (va chat)) ((goc va) or (loc va)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach v nang x hoi. lieu ((va cham) OR (va chat)) ((goc va) OR (loc va)) hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach v nang x hoi. lieu ((va cham) OR (va chat)) ((goc va) or (loc va)) hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach v nang x hoi. lieu ((va cham) OR (va chat)) ((goc va) or (loc va)) hanh dai cua tre*.