Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban banh » ban hanh, ban danh, ban thanh
lang van » dang van, tang van, hoang van
cac xuc » cam xuc, cac nuoc, chat xuc
hai cua » thai cua, dai cua, hoi cua
ban anh » ban hanh, ban danh, bang anh
qua cac » cua cac
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((nang xa) or (lang van)) hoi. hieu qua cac xuc ((ban anh) OR (ban banh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (lang van)) hoi. hieu qua cac xuc ((ban anh) OR (ban banh)) hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty ((nang xa) or (lang van)) hoi. hieu qua cac xuc ((ban anh) OR (ban banh)) hai cua tre*".