Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thu sach » tu sach, thuat sach, thu hoach
hanh lai » hanh lam, hanh tai, thanh lap
hieu van » hieu va, thien van, lieu va
ky tang » ky nang, ky dang, kho tang
van hau » van ha, van hai, van dau
hau xuc » chat xuc
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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 (thuoc sach)) ky tang ((van hoc) or (van hoa)). hieu van hau xuc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuoc sach)) ky tang ((van hoc) OR (van hoa)). hieu van hau xuc va hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuoc sach)) ky tang ((van hoc) or (van hoa)). hieu van hau xuc va hanh lai cua tre*.