Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christian upon » christians upon, christian union, christianity upon
ref history » reef history, brief history, bief history
21 germany » 11 germany, 2 germany, 20 germany
2023 20th » 2023 10th, 2020 20th, 2023 24th
2023 26th » 2023 6th, 2023 5th, 2023 7th

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: %christian upon conversations %21 germany %ref history %((2023 20th) OR (2023 26th)) century%22.
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %21 germany %ref history %((2023 20th) or (2023 26th)) century%22*.