Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, va tinh, le thanh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cuu tre, dua tren
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
soc va » hoc va, loc va, doc va

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: te sac ky lang xa hoi. hieu ((va thanh) OR (ban thanh)) soc va hanh vi ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang xa hoi. hieu ((va thanh) OR (ban thanh)) soc va hanh vi ((cua tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. hieu ((va thanh) OR (ban thanh)) soc va hanh vi ((cua tre) or (cua triet))*.