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