Perhaps you should try some spelling variations:
"serie policiaca publicas." » "serie politica publicas.", "serie politicas publicas.", "serie politicas publicad."
"clase politica publica." » "clase politicas publicas.", "class political publica.", "chile politica publica."
"entre politica publica." » "entre politicas publicas.", "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: (("serie policiaca publicas.") or ((("clase politica publica.") or ("entre politica publica."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie policiaca publicas.") OR ((("clase politica publica.") OR ("entre politica publica.")))).
• Removing quotes may allow a broader search: (( serie policiaca publicas. ) or ((( clase politica publica. ) or ( entre politica publica. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie policiaca publicas.") or ((("clase politica publica.") or ("entre politica publica."))))*.