Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
ky sang » ky dang, ky tang, duy sang
va danh » va dinh, va hanh, dia danh
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cac, va cao
va dan » ca dan, va dao, va dau

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 ((ky sang) OR (ky nang)) ma hoi. lieu va cam xuc ((va danh) OR (va dan)) tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ky sang) OR (ky nang)) ma hoi. lieu va cam xuc ((va danh) or (va dan)) tai cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ky sang) OR (ky nang)) ma hoi. lieu va cam xuc ((va danh) or (va dan)) tai cua tre*.