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