Perhaps you should try some spelling variations:
"sobre politica publicass." » "sobre politicas publicas.", "sobre politica publica.", "sobre politicas publicad.", "sobre politicas publicass.", "sobre politica publicas.", "sobre politica publicacioness."
"serie politicas publica." » "serie politicas publicas.", "serie politicas publicad.", "serie politica publica.", "serie policiaca publica."
"sobre politica publicas." » "sobre politicas publicas.", "sobre politica publica.", "sobre politica publicaciones."

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