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
12 germany » 11 germany, 12 german, 14 germany
2 germany » 7 germany, 2 german, 8 germany
2023 18th » 2023 8th, 2023 11th, 2023 10th

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian upon conversations %((2 germany) OR (12 germany)) %ref history %2023 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %((2 germany) OR (12 germany)) %ref history %2023 18th century%22*.