Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politicas publicas.", "sobre politica publica.", "sobre politica publicaciones."
"serie politicas pabloas." » "serie politicas pablo.", "serie politicas publicas.", "serie politica pablo.", "serie policiaca pabloas."
"sobre politicas public." » "sobre politicas publicas.", "sobre politicas publicad.", "sobre politica 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: (((("sobre politicas public.") OR ("sobre politica publicas."))) OR ("serie politicas pabloas."))~.
• Removing quotes may allow a broader search: (((( sobre politicas public. ) or ( sobre politica publicas. ))) or ( serie politicas pabloas. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("sobre politicas public.") or ("sobre politica publicas."))) or ("serie politicas pabloas."))*.