Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
te sach » toc sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
y sang » _ sang, duy sang
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 sang ((ma hoi) OR (xa hoi)). hieu vien cac du gia thanh hai ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y sang ((ma hoi) OR (xa hoi)). hieu vien cac du gia thanh hai ((cua tre) or (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: te sach y sang ((ma hoi) OR (xa hoi)). hieu vien cac du gia thanh hai ((cua tre) or (cuu tre))*.