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
20th century » 18th century
21 germany » 2.1 germany, 2 germany, 20 germany
11 germany » 11 german, 7 germany, 8 germany
2f history » 2.1 history, imf history, etf history
2.2 20th » 2020 20th, 2023 20th, 2021 20th

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 (((11 germany) OR (1918 germany)))) %2f history %2.2 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 (((11 germany) OR (1918 germany)))) %2f history %2.2 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %((22christian union) or (christian upon)) conversations %((21 germany) or (((11 germany) OR (1918 germany)))) %2f history %2.2 20th century%22*.