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