Perhaps you should try some spelling variations:
sanciones administrative » sanciones administrativas, sancion administrativa, sanctioning administrative
crisis economicas » crisis economica
bases economicas » areas economicas, bases tecnologicas, bases biologicas
areas economica » crisis economica, zonas economicas
area economica » areas economicas, zona economica, la economica

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

• Performing a fuzzy search may retrieve terms with similar spellings: sanciones administrative ((((area economica) OR (areas economica))) or (((bases economicas) or (crisis economicas)))) del (derecho or derechos)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: sanciones administrative ((((area economica) OR (areas economica))) OR (((bases economicas) OR (crisis economicas)))) del (derecho OR derechos).
• The words AND, OR and NOT may confuse the search; try adding quotes: "sanciones administrative ((((area economica) OR (areas economica))) or (((bases economicas) or (crisis economicas)))) del (derecho or derechos)".
• Adding a wildcard symbol may retrieve word variants: sanciones administrative ((((area economica) OR (areas economica))) or (((bases economicas) or (crisis economicas)))) del (derecho or derechos)*.