Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dinh dai » dinh dat, sinh dai, dinh dao
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va tham » van tham, va cham, va thanh
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, tuc xa, duc va

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 xa hoi. lieu va tham ((tuc va) or (truc va)) dinh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang xa hoi. lieu va tham ((tuc va) OR (truc va)) dinh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang xa hoi. lieu va tham ((tuc va) or (truc va)) dinh dai cua tre*.