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