Perhaps you should try some spelling variations:
"serie politicos republica." » "serie politico republicano.", "serie politicas republicanas.", "serie politica republicana.", "serie politicas republica.", "series politicas republica.", "serie politica republica."
"etica politica public." » "etica politica publica.", "etica politica publicas.", "etica politico publico.", "publica politica public."
"serie criticos republica." » "serie clasicos republica.", "serie cronicas republica.", "sopi criticos republica."

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

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