Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
tang van » dang van, hoang van, trong van
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
va dinh » van dinh, va kinh, va tinh
dao duc » giao duc, tao duoc
hieu va » lieu va, hieu qua
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
va dao » ca dao
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky tang van hoa. hieu va dao duc ((va dinh) or (((va thanh) OR (ban thanh)))) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang van hoa. hieu va dao duc ((va dinh) OR (((va thanh) OR (ban thanh)))) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky tang van hoa. hieu va dao duc ((va dinh) or (((va thanh) OR (ban thanh)))) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang van hoa. hieu va dao duc ((va dinh) or (((va thanh) OR (ban thanh)))) vai cua tre*.