Perhaps you should try some spelling variations:
"christianity and other religious -- islam." » "christianity and other religions -- islam.", "christianity and mothers religious -- islam.", "christianity and inter religious -- islam."
"christianity and other regionss -- islam." » "christianity and other regions -- islam.", "christianity and other regional -- islam.", "christianity and other religions -- 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 regionss -- islam.") or ("christianity and other religious -- islam."))) or ("christianity and other religion -- islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("christianity and other regionss -- islam.") OR ("christianity and other religious -- islam."))) OR ("christianity and other religion -- islam.")).
• Removing quotes may allow a broader search: (((( christianity and other regionss -- islam. ) or ( christianity and other religious -- islam. ))) or ( christianity and other religion -- islam. )).
• Adding a wildcard symbol may retrieve word variants: (((("christianity and other regionss -- islam.") or ("christianity and other religious -- islam."))) or ("christianity and other religion -- islam."))*.