Perhaps you should try some spelling variations:
nang noi » nang doc
tu sach » thu sach, su sach, te sach
tai cua » thai cua, tai cuc, tri cua
han tai » hang tai, nhan tai, van tai
ban han » ban hang, ban hanh, ban than
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang hoc
ve cac » vien cac

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 ky ((nang co) OR (nang noi)) hai. hieu ((ve cac) or (va cac)) xuc ban han tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang co) OR (nang noi)) hai. hieu ((ve cac) OR (va cac)) xuc ban han tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang co) OR (nang noi)) hai. hieu ((ve cac) or (va cac)) xuc ban han tai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang co) OR (nang noi)) hai. hieu ((ve cac) or (va cac)) xuc ban han tai cua tre*.