Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu sach » tu sach, thuoc sach, thu hoach
dat tren » dat trong, dua tren
mang xa » lang xa, mang may, dang xay
xuc van » duc van, luc van, vuc van
van anh » van thanh, tuan anh, van minh
y mang » cay mang
anh ve » hanh ve, anh va, anh viet
ve dat » de dat, va dat, ve dao
va cau » van cau, va dau, va cao

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: ((thu sach) OR (thuat sach)) y mang xa hoi. hieu ((va cau) OR (va cac)) xuc van anh ve dat tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thuat sach)) y mang xa hoi. hieu ((va cau) OR (va cac)) xuc van anh ve dat tren~".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) y mang xa hoi. hieu ((va cau) OR (va cac)) xuc van anh ve dat tren*.