Perhaps you should try some spelling variations:
thanh hoi » thanh hoai, thanh hoa, thanh hai
te sach » toc sach
dua ban » dia ban, cua ban, mua ban
hoi cua » hoi chuc
qua ban » cua ban, qua quan
ve cach » va cach, ve canh
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
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) OR (qua ban)) thanh hoi cua tre~.
• 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) OR (qua ban)) thanh hoi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ((ve cach) or (ve cac)) ((dua ban) OR (qua ban)) thanh hoi cua tre*.