Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
tham xuc » tham nuoc, tham thuc, pham duc
doc sach » toc sach, nuoc sach, dac sac
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
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: ((hoc sach) or (doc sach)) y nang x hoi. hieu va tham xuc ((va danh) or (va dinh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (doc sach)) y nang x hoi. hieu va tham xuc ((va danh) OR (va dinh)) vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (doc sach)) y nang x hoi. hieu va tham xuc ((va danh) or (va dinh)) vai cua tre*.