Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
danh hai » dang hai, lanh hai, manh hai
ban danh » ban doanh, ban hanh, ban dan
lang van » dang van, tang van, hoang van
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
xuc ban » duc ban, cuc ban, quoc ban
tu sach » su sach, te sach, tu cach
hai cua » thai cua, dai cua, hoi cua
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) OR (tu sach)) ty ((nang xa) or (lang van)) hoi. hieu qua cac xuc ban danh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ty ((nang xa) OR (lang van)) hoi. hieu qua cac xuc ban danh hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ty ((nang xa) or (lang van)) hoi. hieu qua cac xuc ban danh hai cua tre*".