Perhaps you should try some spelling variations:
thanh tra » thanh toan, thanh hoa
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
tra cuu » tra cau, trau cua, trua cua
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho
o hoc » co hoc, mo hoc, so hoc

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 ky nang ((x hoi) OR (o hoc)). hieu va cam ((truc va) OR (duc va)) thanh tra cuu tre~.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((x hoi) or (o hoc)). hieu va cam ((truc va) or (duc va)) thanh tra cuu tre*.