Perhaps you should try some spelling variations:
curious conversations » curious conversion, serious conversation, courageous conversations
reef history » brief history, reeves history, reef fishery
2f germany » 20 germany, 25 germany, 26 germany
21 germany » 11 germany, 20 germany, _ 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 curious conversations %((((2f germany) OR (21 germany))) OR (2 germany)) %reef history %2f 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian curious conversations %((((2f germany) OR (21 germany))) or (2 germany)) %reef history %2f 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian curious conversations %((((2f germany) OR (21 germany))) or (2 germany)) %reef history %2f 18th century%22*.