Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politica publica.", "sobre politica publicaciones.", "sobre politicas publicas."
"series politico publico." » "series politica publica.", "series politico republicano.", "series politicos republica.", "series political publico.", "series politicas publico.", "serie politica publico."
"serie politicas publicas." » "serie policiaca 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: (((("series politico publico.") or ("serie politicas publicas."))) or ("sobre politica publicas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series politico publico.") OR ("serie politicas publicas."))) OR ("sobre politica publicas.")).
• Removing quotes may allow a broader search: (((( series politico publico. ) or ( serie politicas publicas. ))) or ( sobre politica publicas. )).
• Adding a wildcard symbol may retrieve word variants: (((("series politico publico.") or ("serie politicas publicas."))) or ("sobre politica publicas."))*.