Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christian upon » christians upon, christian union, christianity upon
reef history » brief history, reeves history, reef fishery
ref history » brief history, bief history, imf history
21 germany » 11 germany, 2 germany, 20 germany
2023 10th » 2023 11th, 2013 10th, 2023 15th
2022 10th » 2022 17th, 2022 4th, 2022 5th

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) OR (reef history)) %((2023 10th) OR (2022 10th)) century%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian upon conversations %21 germany %((ref history) or (reef history)) %((2023 10th) OR (2022 10th)) century%22*".