Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh di » thanh doi, thanh de, thanh do
te sach » toc sach
va cham » va chat, va tham
dua ban » dia ban, cua ban, qua ban
cuu tre » cua tre, cau tren, cau treo
va cai » va cac, va bai, va dai
y sang » _ sang, duy sang
ma hoi » mai hoi, xa hoi, me hoi
di cuu » di cau, di cua, dinh cuu

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 (ma hoa)). hieu ((va cai) OR (va cham)) dua ban thanh di cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y sang ((ma hoi) OR (ma hoa)). hieu ((va cai) or (va cham)) dua ban thanh di cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y sang ((ma hoi) OR (ma hoa)). hieu ((va cai) or (va cham)) dua ban thanh di cuu tre*.