Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
xuc van » duc van, luc van, vuc van
su tien » su kien, su hien, tu tieng
va cao » va co, va dao, va bao
x hoi » xa hoi, o hoi, 5 hoi
kem » kiem

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 vu nang ((x hoi) OR (x ho)). hieu ((va cao) OR (va cac)) xuc van hanh kem su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach vu nang ((x hoi) or (x ho)). hieu ((va cao) OR (va cac)) xuc van hanh kem su tien~".
• Adding a wildcard symbol may retrieve word variants: te sach vu nang ((x hoi) or (x ho)). hieu ((va cao) OR (va cac)) xuc van hanh kem su tien*.