Perhaps you should try some spelling variations:
"serie policiaca public." » "serie politica publica.", "serie politica publicas.", "serie politico publico."
"elites politicas public." » "limites politicos public.", "las politicas public.", "ideas politicas public.", "elites politicas publicad.", "elites politica publica.", "elites politica publicas."
"etica politicas publicas." » "etica politicas publicadas.", "etica politica publicaas.", "etica politica publicasas.", "etica politica publicas.", "etico politicas publicas.", "etico politicos publicas.", "etica politicas publica.", "etica politicas publico."

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 public.") or ("elites politicas public."))) or ("etica politicas publicas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie policiaca public.") OR ("elites politicas public."))) OR ("etica politicas publicas.")).
• Removing quotes may allow a broader search: (((( serie policiaca public. ) or ( elites politicas public. ))) or ( etica politicas publicas. )).
• Adding a wildcard symbol may retrieve word variants: (((("serie policiaca public.") or ("elites politicas public."))) or ("etica politicas publicas."))*.