Perhaps you should try some spelling variations:
"serie policiaca publica." » "serie politica publica.", "serie politica publicas.", "serie politicas publicas."
"sobre politicas public." » "sobre politicas publicas.", "sobre politicas publicad.", "sobre politica publica.", "sobre politica public.", "serie politicas public."
"elite politico pabload." » "elite politica pablo.", "elite politico paolo.", "elite politico para.", "elite politica pabload.", "delito politico pabload.", "elites politicas pabload."

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