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

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 public.") or ((("sobre politicas publica.") OR ("sobre politicas publicad."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie policiacas public.") OR ((("sobre politicas publica.") OR ("sobre politicas publicad.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"serie policiacas public.\") or (((\"sobre politicas publica.\") OR (\"sobre politicas publicad.\"))))".
• Removing quotes may allow a broader search: (( serie policiacas public. ) or ((( sobre politicas publica. ) OR ( sobre politicas publicad. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie policiacas public.") or ((("sobre politicas publica.") OR ("sobre politicas publicad."))))*.