Perhaps you should try some spelling variations:
"serie politicas public." » "serie politicas publicas.", "serie politicas publicad.", "serie politica publicas.", "serie policiaca public."
"serie politico publico." » "serie politica publicas.", "serie politico republicano.", "serie politicos republica.", "serie politica publico.", "series political publico.", "series politicas publico."
"crises politica publica." » "crises politicas publicas.", "crises political publica.", "crisis politica publica.", "crisis politicas publica."

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie politicas public.") OR ((("serie politico publico.") OR ("crises politica publica."))))~.
• Removing quotes may allow a broader search: (( serie politicas public. ) or ((( serie politico publico. ) or ( crises politica publica. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("serie politicas public.") or ((("serie politico publico.") or ("crises politica publica."))))*.