Perhaps you should try some spelling variations:
"serie policiaca publica." » "serie politica publica.", "serie politica publicas.", "serie politicas publicas."
"sobre politica publicaa." » "sobre politica publica.", "sobre politica publicas.", "sobre politicas publicas.", "sobre politicas publicaa."
"serie policiacas public." » "serie politicas publicas.", "serie politicas publicad.", "serie politica publica.", "serie politicas public.", "serie politica public.", "series politicas public."

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