Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politica publica.", "sobre politica publicaciones.", "sobre politicas publicas."
"der criticism publica." » "der criticos republica.", "homer criticism publica.", "xavier criticism publica.", "javier criticism publica."
"serie politicas publicas." » "serie policiaca publicas."

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 politicas publicas.") OR ("sobre politica publicas."))) OR ("der criticism publica."))~.
• Removing quotes may allow a broader search: (((( serie politicas publicas. ) or ( sobre politica publicas. ))) or ( der criticism publica. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("serie politicas publicas.") or ("sobre politica publicas."))) or ("der criticism publica."))*.