Perhaps you should try some spelling variations:
"serie policiaca publica." » "serie politica publicas.", "serie politicas publicas.", "serie politicas publicad."
"etica politica publica." » "etica politicas publicas.", "etica politica publicasa.", "etica politico publicoa.", "etica politicas publicasa.", "publica politica publica."
"etico politica public." » "etico politica publicas.", "etico politico publico.", "etico politicas publicas.", "etico politicas public.", "etico politico public.", "mexico politica public."

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