Perhaps you should try some spelling variations:
"christianity and other relations -- islam." » "christianity and other delegations -- islam.", "christianity and other reflections -- islam.", "christianity and better relations -- islam."
"christianity and other regionss -- islam." » "christianity and other regional -- islam.", "christianity and border regionss -- islam."
"Christianity and other religions -- Islam." » "Christianity and author religions -- Islam.", "Christianity and power religions -- Islam.", "Christianity and mothers religiouss -- Islam.", "Christianity and other religious -- Islam."
"christianity and other religion -- islam." » "christianity and author religion -- islam.", "christianity and power religion -- islam.", "christianity and mothers religious -- islam."
"Christianity and other regions -- Islam." » "Christianity and border regions -- Islam."

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