Perhaps you should try some spelling variations:
curious conversations » curious conversion, serious conversation, courageous conversations
ref history » reef history, brief history, bief history
21 germany » 11 germany, 2 germany, 20 germany
2023 20th » 2023 26th, 2023 10th, 2020 20th
2013 10th » 2015 10th, 2013 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: %22christian curious conversations %21 germany %ref history %((2023 20th) OR (2013 10th)) century%22.
• Adding a wildcard symbol may retrieve word variants: %22christian curious conversations %21 germany %ref history %((2023 20th) or (2013 10th)) century%22*.