Perhaps you should try some spelling variations:
christianity from » christianity early, christianity great, christianity a
brief hystory » brief herstory, brief story, bief history
20th century » 18th century
ref history » reef history, bief history, imf history
21 germany » 11 germany, 2 germany, 20 germany
2020 20th » 2020 16th, 2020 2021, 2020 5th

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 from) OR (christianity _)) conversations %21 germany %((ref history) OR (((brief hystory) OR (brief history)))) %2020 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((christianity from) OR (christianity _)) conversations %21 germany %((ref history) or (((brief hystory) or (brief history)))) %2020 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %((christianity from) OR (christianity _)) conversations %21 germany %((ref history) or (((brief hystory) or (brief history)))) %2020 20th century%22*.