Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politicas publicas.", "sobre politica publicaciones.", "sobre politicas publicass."
"elite politica publica." » "elite politicas publicas.", "elites politicas publica.", "etica politica publica.", "entre politica publica."
"serie policiaca public." » "serie politico publico."

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 politica publica.") OR ("sobre politica publicas."))) OR ("serie policiaca public."))~.
• Removing quotes may allow a broader search: (((( elite politica publica. ) or ( sobre politica publicas. ))) or ( serie policiaca public. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("elite politica publica.") or ("sobre politica publicas."))) or ("serie policiaca public."))*.