Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
nang noi » nang doc
va thanh » gia thanh, va tinh, le thanh
su sach » so sach, vu sach
lai cua » dai cua, hai cua, lai chau
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
nang co » nang cao, nang doc, nang hoc
cua tre » cua te, cuu tre, cua triet
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: su sach ty ((nang co) OR (nang noi)) loi. hieu va cam xuc ((va thanh) or (ban thanh)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang co) OR (nang noi)) loi. hieu va cam xuc ((va thanh) OR (ban thanh)) lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang co) OR (nang noi)) loi. hieu va cam xuc ((va thanh) or (ban thanh)) lai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang co) OR (nang noi)) loi. hieu va cam xuc ((va thanh) or (ban thanh)) lai cua tre*.