Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
va triet » va thiet, va trien, ve triet
hieu ve » hieu va, hieu van
ma hoi » mai hoi, ma hoa, me hoi
ve dam » ven dam, ke dam, va dam
dam tu » nam tu, cam tu, tam tu

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: tu cac ky nang ((ma hoi) OR (xa hoi)). hieu ve dam tu va thanh vi ((cua triet) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ((ma hoi) OR (xa hoi)). hieu ve dam tu va thanh vi ((cua triet) or (va triet))~".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((ma hoi) OR (xa hoi)). hieu ve dam tu va thanh vi ((cua triet) or (va triet))*.