Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dieu ban » dieu can, dien ban, dieu hanh
van hanh » van thanh, ban hanh, van anh
hang luc » nang luc, hang luan, hang truc
lieu ban » lieu bai, lieu van, lieu nano
va hanh » va thanh, va danh, ban hanh
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach v nang xa hoi. ((lieu ban) or (dieu ban)) hang luc ((va hanh) or (van hanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang xa hoi. ((lieu ban) OR (dieu ban)) hang luc ((va hanh) OR (van hanh)) vai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach v nang xa hoi. ((lieu ban) or (dieu ban)) hang luc ((va hanh) or (van hanh)) vai cua tre*.