Perhaps you should try some spelling variations:
"christianity and other regionss -- islam." » "christianity and other regions -- islam.", "christianity and other religions -- islam."
"christianity and other regional -- islam." » "christianity and other regions -- islam.", "christianity and inter regional -- islam.", "christianity and chen regional -- islam."
"christianity and other religion -- islam." » "christianity and other religions -- islam.", "christianity and other regions -- islam.", "christianity and power religion -- 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 regional -- islam."))) or ((("christianity and other religion -- islam.") or ("christianity and author religion -- islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("christianity and other regionss -- islam.") OR ("christianity and other regional -- islam."))) OR ((("christianity and other religion -- islam.") OR ("christianity and author religion -- islam.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"christianity and other regionss -- islam.\") OR (\"christianity and other regional -- islam.\"))) or (((\"christianity and other religion -- islam.\") or (\"christianity and author religion -- islam.\"))))".
• Removing quotes may allow a broader search: (((( christianity and other regionss -- islam. ) OR ( christianity and other regional -- islam. ))) or ((( christianity and other religion -- islam. ) or ( christianity and author religion -- islam. )))).
• Adding a wildcard symbol may retrieve word variants: (((("christianity and other regionss -- islam.") OR ("christianity and other regional -- islam."))) or ((("christianity and other religion -- islam.") or ("christianity and author religion -- islam."))))*.