Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
van cac » van hac, van bac, dan cac
van cau » van dau, van hau, van chat
cua tre » cua te, cuu tre, cua triet
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: toc sach ty nang x hoi. hieu ((van cac) OR (van cau)) duc va thanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang x hoi. hieu ((van cac) OR (van cau)) duc va thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang x hoi. hieu ((van cac) OR (van cau)) duc va thanh dai cua tre*.