Perhaps you should try some spelling variations:
"serie policiaca publicad." » "serie politica publica.", "serie politica publicas.", "serie politicas publicad."
"lideres politicos publica." » "limites politicos publica.", "actores politicos publica.", "lideres politicos republica.", "lideres politicas publicas.", "lideres politicas publicad."
"serie politica pablo." » "serie politicas pablo.", "sobre politica pablo.", "elite politica pablo.", "serie politica para.", "serie colica pablo.", "serie politica al."

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 policiaca publicad.") OR ("lideres politicos publica."))) OR ("serie politica pablo."))~.
• Removing quotes may allow a broader search: (((( serie policiaca publicad. ) or ( lideres politicos publica. ))) or ( serie politica pablo. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("serie policiaca publicad.") or ("lideres politicos publica."))) or ("serie politica pablo."))*.