Perhaps you should try some spelling variations:
"serie politicos republica." » "serie politico republicano.", "serie criticos republica.", "serie politicas republicanas.", "serie politicas republica.", "series politicas republica.", "serie politica republica."
"serie policiaca pablo." » "serie politica pablo.", "serie politicas pablo."
"etica politicas publicas." » "etica politica publicas.", "etico politicas publicas.", "etico politicos publicas.", "etica politicas publica.", "etica politicas public.", "etica politicas publico."

Try widening your search to All Fields.

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