Perhaps you should try some spelling variations:
"limites politicos publica." » "lideres politicos publica.", "debates politicos publica.", "limites juridicos publica.", "limites politicos republica.", "limites politicas publicas.", "limites politicas publicad."
"serie politica publica." » "serie politicas publicas.", "serie politicas publica.", "serie policiaca publica.", "sobre politica publica."
"serie politica pablo." » "serie politicas pablo.", "serie policiaca pablo.", "sobre 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 politica publica.") OR ("limites politicos publica."))) OR ("serie politica pablo."))~.
• Removing quotes may allow a broader search: (((( serie politica publica. ) or ( limites politicos publica. ))) or ( serie politica pablo. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("serie politica publica.") or ("limites politicos publica."))) or ("serie politica pablo."))*.