Perhaps you should try some spelling variations:
christianismi » christianism, cristianismo, christianis
christianisme » christianity, christians, christiane
restitutio" » restitution", destitution"
institutio" » institution", institutional", institutionen"

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: "((christianismi OR christianisme) OR christianissimi) (restitutio" or institutio").
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((christianismi OR christianisme) or christianissimi) (restitutio\" or institutio\")".
• Removing quotes may allow a broader search: ((christianismi OR christianisme) or christianissimi) (restitutio or institutio ).
• Adding a wildcard symbol may retrieve word variants: "((christianismi OR christianisme) or christianissimi) (restitutio" or institutio")*.