Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
xuc ban » duc ban, cuc ban, quoc ban
ban anh » ban hanh, ban banh, ban danh
anh dai » vanh dai, anh bai, anh dat
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cai, va cau
va cao » va co, va dao, va bao

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 ty nang xa hoi. hieu ((va cam) or (((va cao) or (va cac)))) xuc ban anh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ((va cam) OR (((va cao) OR (va cac)))) xuc ban anh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ((va cam) or (((va cao) or (va cac)))) xuc ban anh dai cua tre*.