Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
va thanh » gia thanh, ban thanh, va tinh
va hanh » van hanh, va danh, ban hanh
dai cuu » dai cua, dai huu
cac xuc » cam xuc, cac nuoc, chat xuc
sach ty » sach y, sach tu, xach tay
hieu va » lieu va, hieu qua
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: toc ((sach ty) OR (sach thu)) nang x hoi. hieu va cac xuc ((va hanh) OR (va thanh)) dai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ty) OR (sach thu)) nang x hoi. hieu va cac xuc ((va hanh) or (va thanh)) dai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) OR (sach thu)) nang x hoi. hieu va cac xuc ((va hanh) or (va thanh)) dai cuu tre*.