Perhaps you should try some spelling variations:
"Christianity and otras relaciones Islam." » "Christianity and otros relaciones Islam.", "Christianity and otras revelaciones Islam.", "Christianity and otras religiones Islam."
relaciones islam » religiones islam, relaciones hispano, relaciones estado
"christianity and other religions islam." » "christianity and other religiones islam.", "christianity and other religion islam.", "christianity and other religious 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 religions islam.") or ("Christianity and otras relaciones Islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("christianity and other religions islam.") OR ("Christianity and otras relaciones Islam.")).
• Removing quotes may allow a broader search: (( christianity and other religions islam. ) or ( Christianity and otras relaciones Islam. )).
• Adding a wildcard symbol may retrieve word variants: (("christianity and other religions islam.") or ("Christianity and otras relaciones Islam."))*.