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