Perhaps you should try some spelling variations:
"serie politicas publicaa." » "serie politicas publicas.", "serie politicas publicad.", "serie politica publica."
"serie policiaca publicaa." » "serie politica publica.", "serie politica publicas.", "serie politicas publicas."
"sobre politico publico." » "sobre politica publica.", "sobre politica publicas.", "sobre politico republicano.", "sobre politica publico.", "sobre politicas publico.", "hombre politico 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: (("sobre politico publico.") or ((("serie politicas publicaa.") OR ("serie policiaca publicaa."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("sobre politico publico.") OR ((("serie politicas publicaa.") OR ("serie policiaca publicaa.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"sobre politico publico.\") or (((\"serie politicas publicaa.\") OR (\"serie policiaca publicaa.\"))))".
• Removing quotes may allow a broader search: (( sobre politico publico. ) or ((( serie politicas publicaa. ) OR ( serie policiaca publicaa. )))).
• Adding a wildcard symbol may retrieve word variants: (("sobre politico publico.") or ((("serie politicas publicaa.") OR ("serie policiaca publicaa."))))*.