Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
thu sach » tu sach, thuat sach, thuoc sach
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
dai cuu » dai cua, dai huu
cam tuc » cam xuc, cam tu, dam thuc
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
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: ((thu sach) OR (te sach)) ky nang x hoi. hieu van ((cam tuc) OR (nam thuc)) va thanh dai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (te sach)) ky nang x hoi. hieu van ((cam tuc) OR (nam thuc)) va thanh dai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) ky nang x hoi. hieu van ((cam tuc) OR (nam thuc)) va thanh dai cuu tre*.