Perhaps you should try some spelling variations:
"serie policiaca publicas." » "serie politica publicas.", "serie politicas publicas.", "serie politicas publicad."
"serie politico publico." » "serie politica publicas.", "serie politico republicano.", "serie politicos republica.", "serie politica publico.", "serie politicas publico.", "series political publico."
"entre politica publica." » "entre politicas publicas.", "sobre politica publica."

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: (((("serie politico publico.") OR ("serie policiaca publicas."))) OR ("entre politica publica."))~.
• Removing quotes may allow a broader search: (((( serie politico publico. ) or ( serie policiaca publicas. ))) or ( entre politica publica. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("serie politico publico.") or ("serie policiaca publicas."))) or ("entre politica publica."))*.