Perhaps you should try some spelling variations:
"slaves political public." » "claves politicas public.", "class political public.", "blacks political public.", "slaves politicas publicad.", "slaves politica publicas.", "slaves politico publico."
"elite politicas publicas." » "elites politicas publicas.", "elite politica publicas.", "elite politico publicas."
"serie politica publica." » "serie politicas publica.", "serie policiaca publica.", "sobre politica publica."

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