Perhaps you should try some spelling variations:
"serie politicas publico." » "serie politicas publicas.", "serie politicas publicad.", "serie politico publico.", "serie policiaca publico."
"sobre politica publica." » "sobre politicas publicas.", "sobre politica publicasa.", "sobre politico publicoa.", "sobre politicas publicasa.", "sobre politicas publica."
"etica politica public." » "etica politica publicas.", "etica politico publico.", "etica politicas publicas.", "publica politica public."

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: (((("etica politica public.") OR ("sobre politica publica."))) OR ("serie politicas publico."))~.
• Removing quotes may allow a broader search: (((( etica politica public. ) or ( sobre politica publica. ))) or ( serie politicas publico. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("etica politica public.") or ("sobre politica publica."))) or ("serie politicas publico."))*.