Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
va thanh » ban thanh, va tinh, le thanh
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va danh, ban hanh
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
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.

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