Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politicas publicas.", "sobre politica publicaciones.", "sobre politicas publicass."
"serie politico publico." » "serie politico republicano.", "serie politicos republica.", "serie politicas publicas.", "serie politicas publico.", "series political publico.", "series politicas publico."
"serie politica publica." » "serie politicas publicas.", "serie politicas publica.", "serie policiaca publica.", "elite politica publica."

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