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