Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
duc gia » quoc gia
cua tre » cua te, cuu tre, cua triet
van ha » van hoa, van chat, van hanh
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: te sach ty nang x hoi. hieu ((van ha) or (van ban)) duc gia thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu ((van ha) OR (van ban)) duc gia thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu ((van ha) or (van ban)) duc gia thanh dai cua tre*.