Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
ban anh » ban banh, ban danh, bang anh
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
nang o » nang ho, nang ro, nang x
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty ((nang o) or (nang co)) hai. hieu va cam xuc ((ban anh) OR (ban hanh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang o) OR (nang co)) hai. hieu va cam xuc ((ban anh) OR (ban hanh)) di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((nang o) or (nang co)) hai. hieu va cam xuc ((ban anh) OR (ban hanh)) di cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang o) or (nang co)) hai. hieu va cam xuc ((ban anh) OR (ban hanh)) di cua tre*.