Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christian upon » christians upon, christian union, christianity upon
21 germany » 11 germany, 2 germany, 20 germany
2022 20th » 2022 10th, 2022 25th, 2023 20th
2020 20th » 2020 16th, 2020 2021, 2020 5th

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 %brief history %((2022 20th) OR (2020 20th)) century%22.
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %21 germany %brief history %((2022 20th) or (2020 20th)) century%22*.