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."
"elite politicas public." » "elite politicas publicas.", "elite politicas publicad.", "elite politica publica.", "elites politicas public.", "elite politica public.", "elite politico public."

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