Perhaps you should try some spelling variations:
funcion administrativa » gestion administrativa
modelo economico » socio economico
costo economico » costos economicos, corte economico, cost economics
caso economico » censo economico, campo economico, mas economico
del economico » delito economico, orden economico, nivel economico

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: "((\"funcion administrativa ((caso economico) OR (costo economico)) del derecho\") or (\"funcion administrativa ((del economico) OR (modelo economico)) del derecho\"))".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"funcion administrativa ((caso economico) OR (costo economico)) del derecho\\") or (\\"funcion administrativa ((del economico) or (modelo economico)) del derecho\\"))\"".
• Removing quotes may allow a broader search: (( funcion administrativa ((caso economico) OR (costo economico)) del derecho ) or ( funcion administrativa ((del economico) or (modelo economico)) del derecho )).