Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuoc sinh
thuat sach » thuat lanh, thuat san
hanh dai » hanh tai, hanh dao, vanh dai
ty nang » ky nang, ty xang, ty hang
van hoc » van hoa
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
van ha » van hoa, van chat, van hanh
x hoi » xa hoi, o hoi, x ho
du va » dau va, tu va, su va

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) or (thuat sach)) ty nang x hoi. hieu ((van hoc) or (van ha)) du va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (thuat sach)) ty nang x hoi. hieu ((van hoc) OR (van ha)) du va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat sach)) ty nang x hoi. hieu ((van hoc) or (van ha)) du va hanh dai cua tre*.