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

You may be able to get more results by adjusting your search query.

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