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