Perhaps you should try some spelling variations:
marco administrativo » derecho administrativo, actos administrativos
administrativo area » administrativa area, administrative area, administrativas area
area economica » areas economica, areas economicas, zona economica
fde derecho » fe derecho, del derecho, de derechos
de derecho » del derecho, de derechos
el derecho » del derecho

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

• Performing a fuzzy search may retrieve terms with similar spellings: marco administrativo area economica ((de derecho) or (((fde derecho) or (el derecho))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: marco administrativo area economica ((de derecho) OR (((fde derecho) OR (el derecho)))).
• Adding a wildcard symbol may retrieve word variants: marco administrativo area economica ((de derecho) or (((fde derecho) or (el derecho))))*.