Perhaps you should try some spelling variations:
"sobre politicas publicad." » "sobre politicas publicas.", "sobre politica publicas.", "sobre politicos republica.", "sobre politica publicad."
"etica politica publica." » "etica politicas publicas.", "publica politica publica."
"serie politicas pablo." » "serie policiaca pablo.", "serie politica pablo.", "serie politicas para.", "serie politicas paz."

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