Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
banh dai » benh dai, ban dai, vanh dai
thu sach » thuat sach, thuoc sach, thu hoach
ban banh » ban hanh, ban anh, ban danh
xuc ban » duc ban, cuc ban, quoc ban
cac xuc » cam xuc, cac nuoc, chat xuc
qua cac » cua cac
tu sach » su sach, te sach, tu cach
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) OR (thu sach)) ty ((nang x) OR (lang van)) hoi. hieu qua cac xuc ban banh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ty ((nang x) or (lang van)) hoi. hieu qua cac xuc ban banh dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ty ((nang x) or (lang van)) hoi. hieu qua cac xuc ban banh dai cua tre*.