Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cam luc » cau luc
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
sach vu » sach va, sach tu, sach uu
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
vu nang » vuc nang, va nang, vu dang
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 vu nang xa hoi. hieu va ((((cam luc) OR (cam xuc))) OR (chau au)) va hanh de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach vu nang xa hoi. hieu va ((((cam luc) OR (cam xuc))) or (chau au)) va hanh de cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach vu nang xa hoi. hieu va ((((cam luc) OR (cam xuc))) or (chau au)) va hanh de cua tre*.