Perhaps you should try some spelling variations:
serious conversation » curious conversations, serious conideration, versus conversation
22christian serious » christian sermons
20th century » 18th century
tnf history » etf history, ref history, motif history
imf history » brief history
21 germany » 11 germany, 20 germany, 7 germany
2 germany » 7 germany, 2 german, 8 germany
2.2 20th » 2020 20th, 2023 20th, 2021 20th

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 serious conversation %((21 germany) OR (2 germany)) %((tnf history) OR (imf history)) %2.2 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian serious conversation %((21 germany) OR (2 germany)) %((tnf history) or (imf history)) %2.2 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian serious conversation %((21 germany) OR (2 germany)) %((tnf history) or (imf history)) %2.2 20th century%22*.