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