Perhaps you should try some spelling variations:
ban dinh » ban tinh, van dinh, ban dich
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
ve cham » va cham, ve chat, vu cham
dinh vi » dinh ve, dinh viet, dinh tri
cuu ban » cuu van, cua ban, cuu san
vi cua » vai cua, di cua
tu san » thu san, tu ban, tu can
ve cac » va cac, vien cac
san ky » sang ky, van ky, dan ky

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky lang ((van hoc) or (van hoa)). hieu ((ve cham) or (ve cac)) cuu ban dinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky lang ((van hoc) OR (van hoa)). hieu ((ve cham) OR (ve cac)) cuu ban dinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu san ky lang ((van hoc) or (van hoa)). hieu ((ve cham) or (ve cac)) cuu ban dinh vi cua tre*.