Perhaps you should try some spelling variations:
van gianh » va gianh, van gian, dan gian
van giang » manh giang, tran giang, dan gian
toc sach » hoc sach, doc sach, thuoc sach
hieu ve » hieu van
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
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.

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