Perhaps you should try some spelling variations:
curious conversations » curious conversion, courageous conversations, conscious conversations
serious conversation » serious conideration, versus conversation, ingenious conversation
union conversations » win conversations, design conversations, driven conversations
ref history » reef history, brief history, bief history
tnf history » imf history, motif history, stone history
etf history » reef history, imf history, beruf history
20 germany » 2 germany, 7 germany, 8 germany
2f germany » 2 germany, 21 germany, 25 germany

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