Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh dai » hanh tai, hanh dao, vanh dai
va hanh » van hanh, va thanh, va danh
van hai » van ha, van chat, van hanh
van hac » van hoc, van ha, van chat
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
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: ((tu sach) or (thuat sach)) ty nang x hoi. hieu ((van hac) or (van hai)) du va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ty nang x hoi. hieu ((van hac) OR (van hai)) du va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ty nang x hoi. hieu ((van hac) or (van hai)) du va hanh dai cua tre*.