Perhaps you should try some spelling variations:
sach va » sach xa, sach ha, sach dao
hieu vu » hieu va, hieu ve, hieu su
cao cuu » cap cuu, cao chu, cham cuu
vu cao » cu cao, va cao
ve dan » ke dan, le dan, he dan
va dan » ca dan, va dao, va dau
vi cua » vai cua, di cua
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 va) OR (sach y)) nang x hoi. hieu vu cao cuu ((ve dan) OR (va dan)) vi cua te~.
• Adding a wildcard symbol may retrieve word variants: te ((sach va) or (sach y)) nang x hoi. hieu vu cao cuu ((ve dan) or (va dan)) vi cua te*.