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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("slaves political public.") or ("series politicas public."))) or ("serie politica publica."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("slaves political public.") OR ("series politicas public."))) OR ("serie politica publica.")).
• Removing quotes may allow a broader search: (((( slaves political public. ) or ( series politicas public. ))) or ( serie politica publica. )).
• Adding a wildcard symbol may retrieve word variants: (((("slaves political public.") or ("series politicas public."))) or ("serie politica publica."))*.