Perhaps you should try some spelling variations:
christianity among » christianity being, christianity sermons, christianity a
christianity upon » christianity along, christianity from, christians upon
bief history » brief history, brief hystory, imf history
ref history » reef history, brief history, imf history
21 germany » 11 germany, 2 germany, 20 germany
2020 18th » 2020 16th, 2020 15th, 2020 8th

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: %((christianity upon) OR (christianity among)) conversations %21 germany %((ref history) OR (bief history)) %2020 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((christianity upon) OR (christianity among)) conversations %21 germany %((ref history) or (bief history)) %2020 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %((christianity upon) OR (christianity among)) conversations %21 germany %((ref history) or (bief history)) %2020 18th century%22*.