Perhaps you should try some spelling variations:
christians among » christianity among, christians being, christians about
christians upon » christians from, christians being, christians under
christian upon » christian union, christianity upon, christ upon
ref history » reef history, bief history, imf history
21 germany » 11 germany, 20 germany, 1 germany
2 germany » 7 germany, 2 german, 8 germany

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: %((christian upon) OR (((christians upon) OR (christians among)))) conversations %((21 germany) OR (2 germany)) %((ref history) OR (brief history)) %2.2 ((20th century) OR (18th century))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((christian upon) or (((christians upon) or (christians among)))) conversations %((21 germany) OR (2 germany)) %((ref history) or (brief history)) %2.2 ((20th century) or (18th century))%22".
• Adding a wildcard symbol may retrieve word variants: %((christian upon) or (((christians upon) or (christians among)))) conversations %((21 germany) OR (2 germany)) %((ref history) or (brief history)) %2.2 ((20th century) or (18th century))%22*.