Perhaps you should try some spelling variations:
22christian union » christian union, christian upon
christian unity » christian union, christian laity, christian divinity
1918 germany » 8 germany
ref history » reef history, brief history, bief history
2f germany » 20 germany, 21 germany, 25 germany
11 germany » 11 german, _ germany, 7 germany
2 germany » _ germany, 7 germany, 2 german

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 %((((2f germany) OR (2 germany))) OR (((11 germany) OR (1918 germany)))) %ref history %2f 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22christian union) OR (christian unity)) conversations %((((2f germany) or (2 germany))) or (((11 germany) or (1918 germany)))) %ref history %2f 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %((22christian union) OR (christian unity)) conversations %((((2f germany) or (2 germany))) or (((11 germany) or (1918 germany)))) %ref history %2f 18th century%22*.