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

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 publica.") or ("serie politica pablo."))) or ("sobre politica publicas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie politica publica.") OR ("serie politica pablo."))) OR ("sobre politica publicas.")).
• Removing quotes may allow a broader search: (((( serie politica publica. ) or ( serie politica pablo. ))) or ( sobre politica publicas. )).
• Adding a wildcard symbol may retrieve word variants: (((("serie politica publica.") or ("serie politica pablo."))) or ("sobre politica publicas."))*.