Perhaps you should try some spelling variations:
"serie politicas pablo." » "serie policiaca pablo.", "serie politica pablo.", "serie politicas para.", "serie politicas paz."
"elite politicas publicas." » "elites politicas publicas.", "elite politica publicas.", "elite politico publicas.", "elite politicas public.", "elite politicas publico."
"sobre politica publica." » "sobre politicas 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 politicas pablo.") OR ("sobre politica publica."))) OR ("elite politicas publicas."))~.
• Removing quotes may allow a broader search: (((( serie politicas pablo. ) or ( sobre politica publica. ))) or ( elite politicas publicas. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("serie politicas pablo.") or ("sobre politica publica."))) or ("elite politicas publicas."))*.