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