Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
danh va » doanh va, hanh va, anh va
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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