Perhaps you should try some spelling variations:
"serie policiaca publicas." » "serie politica publicas.", "serie politicas publicas.", "serie politicas publicad."
"sobre politica publica." » "sobre politicas publicas.", "sobre politicas publica."
"sobre politica publico." » "sobre politico publico.", "sobre politica publicas.", "sobre politicas publicas.", "sobre politicas publico."

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