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