Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh hai » thanh hai, nhanh hai, hang hai
ban hanh » ban hang
lang van » dang van, tang van, hoang van
hai cua » thai cua, dai cua, hoi cua
xuc ban » duc ban, cuc ban, quoc ban
cac xuc » cam xuc, cac nuoc, chat xuc
qua cac » cua cac
cua te » cua tu

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: ((te sach) OR (toc sach)) y ((nang x) OR (lang van)) hoi. hieu qua cac xuc ban hanh hai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y ((nang x) or (lang van)) hoi. hieu qua cac xuc ban hanh hai cua te~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y ((nang x) or (lang van)) hoi. hieu qua cac xuc ban hanh hai cua te*.