Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
hac tuc » thac toc, thai tuc
van hac » van hoc, van ha, van hai
cua tre » cua te, cuu tre, cua triet
nang xa » lang xa, nang ma, mang xa
tuc va » thuc va, truc va, tuc xa
su cac » tu cac, su cao, su can
su sac » su sach, su xac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su cac)) ky ((nang xa) OR (nang x)) hoi. hieu van hac tuc va hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) or (su cac)) ky ((nang xa) OR (nang x)) hoi. hieu van hac tuc va hanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky ((nang xa) OR (nang x)) hoi. hieu van hac tuc va hanh vai cua tre*.