Perhaps you should try some spelling variations:
"sobre politicas public." » "sobre politicas publicad.", "sobre politica publica.", "sobre politica publicas.", "sobre politica public."
"serie politicas publicas." » "serie politicas publicadas.", "serie politica publicaas.", "serie politica publicasas.", "serie policiaca publicas."
"elites politicas pablo." » "limites politicos pablo.", "las politicas pablo.", "ideas politicas pablo.", "elites politica pablo.", "elites politicas para.", "elites politicas paz."

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