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