Perhaps you should try some spelling variations:
curious conversations » curious conversion, serious conversation, courageous conversations
20th century » 18th century
ref history » reef history, bief history, etf history
8 germany » _ germany, 7 germany, 1918 germany
2f 20th » 20 20th, 2.2 20th

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 %8 germany %((ref history) OR (((imf history) OR (brief history)))) %2f 20th century%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian curious conversations %8 germany %((ref history) or (((imf history) OR (brief history)))) %2f 20th century%22*".