Perhaps you should try some spelling variations:
22christian union » christian union, christian upon
christian unity » christian union, christian laity, christian divinity
20 germany » 2 germany, 8 germany, 5 germany
11 germany » 11 german, 1918 germany, 8 germany
2f history » imf history, etf history, ref history
2.2 18th » 2021 18th, 2022 18th, 2023 18th

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 unity)) conversations %((20 germany) OR (((11 germany) OR (7 germany)))) %2f history %2.2 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22christian union) or (christian unity)) conversations %((20 germany) or (((11 germany) OR (7 germany)))) %2f history %2.2 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %((22christian union) or (christian unity)) conversations %((20 germany) or (((11 germany) OR (7 germany)))) %2f history %2.2 18th century%22*.