Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban banh » ban hanh, ban anh, ban danh
tu cach » tu cac
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
xuc ban » duc ban, cuc ban, quoc ban
banh vi » hanh vi, ban vi, benh vi
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
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 cach) OR (thu sach)) ((ky lang) OR (ky dang)) xa hoi. lieu va cam xuc ban banh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thu sach)) ((ky lang) OR (ky dang)) xa hoi. lieu va cam xuc ban banh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ((ky lang) OR (ky dang)) xa hoi. lieu va cam xuc ban banh vi cua tre*.