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