Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
ban anh » ban hanh, ban banh, ban danh
xuc ban » duc ban, cuc ban, quoc ban
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
son hai » cong hai
so hai » su hai, so ha, co hai
anh di » danh di, xanh di, anh d
di cuu » di cau, di cua, dinh cuu
va cam » va cham, va cao, va cai

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