Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
te sach » toc sach
hieu ve » hieu van
hieu va » lieu va, hieu qua
hai cuu » hai cua, hai chu, hai cuc
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, ma hoa, me hoi
du gia » duc gia, dau gia, vu gia

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: te sach y nang ((ma hoi) OR (xa hoi)). ((hieu ve) OR (hieu va)) cac du gia thanh hai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((ma hoi) OR (xa hoi)). ((hieu ve) or (hieu va)) cac du gia thanh hai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) OR (xa hoi)). ((hieu ve) or (hieu va)) cac du gia thanh hai cuu tre*.