Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cua tre » cua te, cuu tre, cua triet
xay hoi » xa hoi, tay hoi, cay phoi
ve cac » va cac
ban ky » van ky, dan ky
va xay » va xac
di cua » dai cua, doi cua, de cua
tu ban » thu ban, te ban
ky va » ly va, ke va, my va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky va xay hoi. hieu ((ve cac) or (vien cac)) xuc ((va hanh) OR (va danh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky va xay hoi. hieu ((ve cac) OR (vien cac)) xuc ((va hanh) OR (va danh)) di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ky va xay hoi. hieu ((ve cac) or (vien cac)) xuc ((va hanh) OR (va danh)) di cua tre*".