Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cac bac » cac bai, cac ban, cac cach
cac tac » cac toc, cac dac, cac tai
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
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 lang xa hoi. hieu van ((cac tac) OR (cac bac)) va hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) or (su cac)) ky lang xa hoi. hieu van ((cac tac) OR (cac bac)) va hanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky lang xa hoi. hieu van ((cac tac) OR (cac bac)) va hanh vai cua tre*.