Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
ban hanh » ban hang
cau treo » cau theo, cau tren, cau triet
lang xa » lang ha, dang xay, lang van
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren
y lang » o lang, _ lang, tay lang

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: hoc sach y lang xa hoi. hieu qua cham xuc ban hanh vi ((cua tre) OR (((cuu tre) OR (cau treo))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y lang xa hoi. hieu qua cham xuc ban hanh vi ((cua tre) or (((cuu tre) OR (cau treo))))~".
• Adding a wildcard symbol may retrieve word variants: hoc sach y lang xa hoi. hieu qua cham xuc ban hanh vi ((cua tre) or (((cuu tre) OR (cau treo))))*.