Perhaps you should try some spelling variations:
"serie policiaca publica." » "serie politica publicas.", "serie politicas publicas.", "serie politicas publicad."
"sobre politico publico." » "sobre politica publicas.", "sobre politico republicano.", "sobre politicos republica.", "sobre politica publico.", "sobre politicas publico.", "hombre politico publico."
"serie politica publica." » "serie politicas publicas.", "serie politicas publica.", "sobre politica publica.", "elite politica publica."

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