Perhaps you should try some spelling variations:
22christian union » christian union, christian unity
christian upon » christians upon, christian union, christianity upon
1918 germany » 8 germany
21 germany » 11 germany, 2 germany, 20 germany
2f history » imf history, etf history, ref history
2023 20th » 2023 26th, 2023 10th, 2020 20th
2021 20th » 2021 24th, 2020 20th, 2021 10th

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: %((22christian union) OR (christian upon)) conversations %((21 germany) OR (1918 germany)) %2f history %((2023 20th) OR (2021 20th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22christian union) OR (christian upon)) conversations %((21 germany) or (1918 germany)) %2f history %((2023 20th) or (2021 20th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %((22christian union) OR (christian upon)) conversations %((21 germany) or (1918 germany)) %2f history %((2023 20th) or (2021 20th)) century%22*.