Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
ban lanh » ban hanh, ban linh, ban banh
cham xuc » cam xuc, chat xuc, cham soc
hai cua » thai cua, dai cua, hoi cua
ban anh » ban hanh, ban banh, ban danh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua tre » cua te, cuu tre, cua triet

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang xa) OR (nang ma)) hoi. hieu qua cham xuc ((ban lanh) OR (ban anh)) hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((nang xa) or (nang ma)) hoi. hieu qua cham xuc ((ban lanh) OR (ban anh)) hai cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang xa) or (nang ma)) hoi. hieu qua cham xuc ((ban lanh) OR (ban anh)) hai cua tre*.