Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
thanh de » hanh de, thanh ve, thanh do
nang ma » tang ma, sang ma, nang cao
thi van » thi lan, thi hanh, thi nang
hau duc » huu duc, ha duc, pham duc
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ma hoi » mai hoi, xa hoi, ma hoa
de cua » le cua, te cua, dieu cua

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: toc sach v nang ma hoi. ((hieu van) OR (thi van)) hau duc van thanh de cua tre~.
• Adding a wildcard symbol may retrieve word variants: toc sach v nang ma hoi. ((hieu van) or (thi van)) hau duc van thanh de cua tre*.