Perhaps you should try some spelling variations:
"sobre politicas publica." » "sobre politicas publicad.", "sobre politica publica.", "sobre politicos republica.", "serie politicas publica."
"sobre politicas publicas." » "sobre politicas publicads.", "sobre politica publicas.", "sobre politicos republicas.", "serie politicas publicas."
"serie politica publicas." » "serie politica publica.", "serie politica publicaciones.", "serie politicas publicas.", "serie policiaca publicas.", "sobre politica publicas."

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