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