Perhaps you should try some spelling variations:
"sobre politica publicas." » "sobre politicas publicas.", "sobre politica publica.", "sobre politica publicaciones."
"serie politica publico." » "serie politica publica.", "serie politico publico.", "serie politicas publicas.", "serie politicas publico.", "serie policiaca publico."
"elite politica publico." » "elite politica publica.", "elite politico publico.", "elite politicas publicas.", "elites politicas publico.", "etica politica publico.", "entre politica publico."

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