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