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