Perhaps you should try some spelling variations:
"sobre politicas publicass." » "sobre politicas publicas.", "sobre politicas publicad.", "sobre politicas republicanas.", "sobre politica publicass.", "serie politicas publicass."
"entre politica publicas." » "entre politicas publicas.", "entre politica publicaciones.", "entre politicas publicass.", "sobre politica publicas."
"serie politica publica." » "serie politicas publicas.", "serie politicas publica.", "serie policiaca publica.", "sobre 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 publica.") or ((("sobre politicas publicass.") or ("entre politica publicas."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie politica publica.") OR ((("sobre politicas publicass.") OR ("entre politica publicas.")))).
• Removing quotes may allow a broader search: (( serie politica publica. ) or ((( sobre politicas publicass. ) or ( entre politica publicas. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie politica publica.") or ((("sobre politicas publicass.") or ("entre politica publicas."))))*.