Perhaps you should try some spelling variations:
curious conversion » curious confession, curious conversations, cur's conversion
ref history » reef history, brief history, bief history
21 germany » 2.1 germany, 11 germany, 2 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 %21 germany %ref history %((2023 20th) OR (2023 10th)) century%22.
• Adding a wildcard symbol may retrieve word variants: %22christian curious conversion %21 germany %ref history %((2023 20th) or (2023 10th)) century%22*.