Perhaps you should try some spelling variations:
"serie politica publicas." » "serie politicas publicas.", "serie politica publicaciones.", "serie politicas publicass.", "serie policiaca publicas.", "elite politica publicas."
"sobre politica publicas." » "sobre politicas publicas.", "sobre politica publicaciones.", "sobre politicas publicass."
"etica politica publica." » "etica politicas publicas.", "publica politica publica."

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 politica publicas.") OR ("sobre politica publicas."))) or ("etica politica publica."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie politica publicas.") OR ("sobre politica publicas."))) OR ("etica politica publica.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"serie politica publicas.\") OR (\"sobre politica publicas.\"))) or (\"etica politica publica.\"))".
• Removing quotes may allow a broader search: (((( serie politica publicas. ) OR ( sobre politica publicas. ))) or ( etica politica publica. )).
• Adding a wildcard symbol may retrieve word variants: (((("serie politica publicas.") OR ("sobre politica publicas."))) or ("etica politica publica."))*.