Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
sach vu » sach va, sach tu, sach uu
hieu va » lieu va, hieu qua
nang xa » lang xa, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet
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) OR (nang x)) hoi. hieu va ((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) OR (nang x)) hoi. hieu va ((cam xuc) or (chau au)) va hanh de cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach vu ((nang xa) OR (nang x)) hoi. hieu va ((cam xuc) or (chau au)) va hanh de cua tre*.