Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
dang hoa » dang hoai, dang khoa, dong hoa
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cua tre » cua te, cuu tre, cua triet
hoa hoi » khoa hoi, hoa hoc, hoa doi
ty dang » ty xang, ky dang, ty hang
va cam » va cham, va cac, va cao

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) OR (doc sach)) ty dang hoa hoi. lieu va cam xuc ((va hanh) or (va danh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ty dang hoa hoi. lieu va cam xuc ((va hanh) OR (va danh)) vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) ty dang hoa hoi. lieu va cam xuc ((va hanh) or (va danh)) vai cua tre*".