Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hoi » thanh hoai, thanh hoa, thanh hai
te sach » toc sach
dua ban » dia ban, cua ban, qua ban
cua tre » cuu tre, cua triet, dua tren
ve cach » va cach, ve canh
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
cua te » cua tu
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: te sach y nang x hoi. hieu ((ve cach) OR (ve cac)) dua ban thanh hoi ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu ((ve cach) or (ve cac)) dua ban thanh hoi ((cua tre) OR (cua te))~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ((ve cach) or (ve cac)) dua ban thanh hoi ((cua tre) OR (cua te))*.