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