Perhaps you should try some spelling variations:
22christian union » christian unity, christian upon
reeves history » waves history, lives history, heresies history
reef history » brief history, reef fishery, imf history
2f germany » 20 germany, 21 germany, 25 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 union)) conversations %((2f germany) OR (2 germany)) %((reef history) OR (reeves history)) %2f 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22christian union) or (christian union)) conversations %((2f germany) or (2 germany)) %((reef history) OR (reeves history)) %2f 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %((22christian union) or (christian union)) conversations %((2f germany) or (2 germany)) %((reef history) OR (reeves history)) %2f 18th century%22*.