Perhaps you should try some spelling variations:
ban hanh » ban hang
ve cham » ve chat, vu cham, ve chim
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
va ban » van ban, va bai, va bao
ban ky » van ky, dan ky
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: va ban ky nang x ho. hieu ((ve cham) OR (va cham)) soc ((va hanh) or (ban hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: va ban ky nang x ho. hieu ((ve cham) OR (va cham)) soc ((va hanh) OR (ban hanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "va ban ky nang x ho. hieu ((ve cham) OR (va cham)) soc ((va hanh) or (ban hanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: va ban ky nang x ho. hieu ((ve cham) OR (va cham)) soc ((va hanh) or (ban hanh)) vi cua tre*.