Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, tu cach
cuc ban » cua ban, cac ban, cuu ban
cam cuc » cam xuc, cham cuu, pham cuc
hieu va » lieu va
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 (te sach)) ky tang xa hoi. ((hieu va) OR (hieu qua)) cam cuc ban hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky tang xa hoi. ((hieu va) OR (hieu qua)) cam cuc ban hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky tang xa hoi. ((hieu va) OR (hieu qua)) cam cuc ban hanh vi cua tre*.