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