Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politica publica.", "sobre politica publicaciones.", "sobre politicas publicas."
"serie politicas publicas." » "serie policiaca publicas."
"sus criticos republica." » "sus critico republica.", "sus criticism republica.", "sus critica republica.", "sus criticos publica."

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 publicas.") or ("sobre politica publicas."))) or ("sus criticos republica."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie politicas publicas.") OR ("sobre politica publicas."))) OR ("sus criticos republica."))*.
• Removing quotes may allow a broader search: (((( serie politicas publicas. ) or ( sobre politica publicas. ))) or ( sus criticos republica. ))*.