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
stone history » stores history, one history, story history
etf history » reef history, imf history, tnf history
ref history » reef history, brief history, bief history
2f germany » 2 germany, 20 germany, 21 germany
2.2 20th » 2020 20th, 2023 20th, 2021 20th
2f 20th » 20 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 ((union conversations) OR (((curious conversations) OR (serious conversation)))) %2f germany %((((etf history) OR (stone history))) OR (ref history)) %((2f 20th) OR (2.2 20th)) 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 %((((etf history) or (stone history))) or (ref history)) %((2f 20th) OR (2.2 20th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (((curious conversations) or (serious conversation)))) %2f germany %((((etf history) or (stone history))) or (ref history)) %((2f 20th) OR (2.2 20th)) century%22*.