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