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
thuc va » thuc vat, thuc dan, thuc day
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, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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