Perhaps you should try some spelling variations:
"filosofia politicas publica del." » "filosofia politica publica del.", "filosofico politicas publica del.", "filosofico politica publica del.", "filosofia politicas publicas del.", "filosofia politicas publicad del.", "filosofia politicas publica de.", "filosofia politicas publica el.", "filosofia politicas publica en."
"filosofia critica republica el." » "filosofia politica republica el.", "filosofia juridica republica el.", "filosofia practica republica el.", "filosofia criticos republica el.", "filosofia primitiva republica el.", "filosofia primera republica el.", "filosofia critica republica en.", "filosofia critica republica de.", "filosofia critica republica y."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("filosofia politicas publica del.") or ("filosofia critica republica el."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("filosofia politicas publica del.") OR ("filosofia critica republica el.")).
• Removing quotes may allow a broader search: (( filosofia politicas publica del. ) or ( filosofia critica republica el. )).
• Adding a wildcard symbol may retrieve word variants: (("filosofia politicas publica del.") or ("filosofia critica republica el."))*.