Perhaps you should try some spelling variations:
"Christianity and other relations -- Islam." » "Christianity and other religions -- Islam.", "Christianity and other delegations -- Islam.", "Christianity and other reflections -- Islam."
"christianity and other religion -- islam." » "christianity and other religions -- islam.", "christianity and author religion -- islam.", "christianity and other regions -- islam."

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: (("Christianity and other relations -- Islam.") or ("christianity and other religion -- islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("Christianity and other relations -- Islam.") OR ("christianity and other religion -- islam.")).
• Removing quotes may allow a broader search: (( Christianity and other relations -- Islam. ) or ( christianity and other religion -- islam. )).
• Adding a wildcard symbol may retrieve word variants: (("Christianity and other relations -- Islam.") or ("christianity and other religion -- islam."))*.