Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dinh duc » minh duc, ninh duc, tinh duc
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
duc cua » doc cua, luc cua, tuc cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va cam » va cham, va cao, va cai
tuc va » thuc va, truc va, tuc xa

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