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