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
2 germany » 12 germany, 7 germany, 8 germany
2023 18th » 2023 8th, 2023 11th, 2023 10th
2 german » 3 german, 5 german

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 %((2 germany) OR (2 german)) %((ref history) OR (reef history)) %2023 18th century%22.
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %((2 germany) or (2 german)) %((ref history) or (reef history)) %2023 18th century%22*.