Perhaps you should try some spelling variations:
curious conversion » curious confession, curious conversations, cur's conversion
reef history » brief history, reeves history, reef fishery
ref history » brief history, bief history, imf history
20 germany » 2 germany, 7 germany, 8 germany
2023 20th » 2023 26th, 2020 20th, 2023 24th
2023 10th » 2022 10th, 2023 11th, 2013 10th

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: %22christian curious conversion %20 germany %((ref history) OR (reef history)) %((2023 20th) OR (2023 10th)) century%22.
• Adding a wildcard symbol may retrieve word variants: %22christian curious conversion %20 germany %((ref history) or (reef history)) %((2023 20th) or (2023 10th)) century%22*.