Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
doi cua » dai cua, hoi cua, dong cua
ban anh » ban hanh, ban banh, ban danh
xuc ban » duc ban, cuc ban, quoc ban
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
so hai » son hai, su hai, so ha
va cam » va cham, va cac, va cao
di cua » dai cua, de cua, do cua
o hai » co hai, o lai, _ hai

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