Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham xuc » cam xuc, chat xuc, cham soc
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
va danh » va dinh, va dan, dia danh
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, ban hanh
nang xa » nang x, lang xa, mang xa
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((nang xa) OR (nang ma)) hoi. hieu van cham xuc ((va danh) OR (va hanh)) vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y ((nang xa) OR (nang ma)) hoi. hieu van cham xuc ((va danh) or (va hanh)) vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach y ((nang xa) OR (nang ma)) hoi. hieu van cham xuc ((va danh) or (va hanh)) vai cua tre*.