Perhaps you should try some spelling variations:
"sobre politica publicaas." » "sobre politicas publicas.", "sobre politica publica.", "sobre politicas publicad.", "sobre politicas publicaas."
"etica politica publicas." » "etica politicas publicas.", "etica politica publica.", "etica politica publicaciones.", "publica politica publicas."
"serie politico publico." » "serie politica publica.", "serie politico republicano.", "serie politicos republica.", "serie politica publico.", "serie politicas publico.", "series political publico."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("serie politico publico.") or ((("etica politica publicas.") or ("sobre politica publicaas."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie politico publico.") OR ((("etica politica publicas.") OR ("sobre politica publicaas.")))).
• Removing quotes may allow a broader search: (( serie politico publico. ) or ((( etica politica publicas. ) or ( sobre politica publicaas. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie politico publico.") or ((("etica politica publicas.") or ("sobre politica publicaas."))))*.