Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
tham xuc » tham nuoc, tham thuc, pham duc
doc sach » hoc sach, nuoc sach, dac sac
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
va danh » va dinh, va dan, va hanh
va kinh » va tinh, qua kinh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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) or (doc sach)) y nang x hoi. hieu va tham xuc ((va danh) or (va kinh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) y nang x hoi. hieu va tham xuc ((va danh) OR (va kinh)) vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (doc sach)) y nang x hoi. hieu va tham xuc ((va danh) or (va kinh)) vai cua tre*.