Perhaps you should try some spelling variations:
"sobre politicas publica." » "sobre politicas publicas.", "sobre politicas publicad.", "sobre politicos republica.", "serie politicas publica."
"sobre politica publicas." » "sobre politicas publicas.", "sobre politica publicaciones.", "sobre politicas publicass."
"publica politica publica." » "public policy publica.", "publica politicas publicas."

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