Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cau treo » cau theo, cau tren, cau triet
nang xa » nang x, lang xa, nang ma
xuc ban » duc ban, cuc ban, quoc ban
ban anh » ban hanh, ban banh, ban danh
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cao, va cai
y nang » ky nang, ly nang, v nang
anh vi » hanh vi, anh va, anh ve

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