Perhaps you should try some spelling variations:
ban hanh » ban hang
ky dang » ky danh
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky dang) OR (ky nang)) xa hoi. hieu ((va cam) or (va cao)) xuc ban hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky dang) OR (ky nang)) xa hoi. hieu ((va cam) OR (va cao)) xuc ban hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky dang) OR (ky nang)) xa hoi. hieu ((va cam) or (va cao)) xuc ban hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky dang) OR (ky nang)) xa hoi. hieu ((va cam) or (va cao)) xuc ban hanh vi cua tre*.