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