Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
ban hanh » ban hang
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ban anh » ban banh, ban danh, bang anh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
co hai » co dai, co hoi, so hai
di cuu » di cau, di cua, dinh cuu
o hai » so 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: su sach ky nang ((co hai) OR (o hai)). hieu va cham xuc ((ban anh) or (ban hanh)) di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((co hai) OR (o hai)). hieu va cham xuc ((ban anh) OR (ban hanh)) di cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((co hai) OR (o hai)). hieu va cham xuc ((ban anh) or (ban hanh)) di cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((co hai) OR (o hai)). hieu va cham xuc ((ban anh) or (ban hanh)) di cuu tre*.