Perhaps you should try some spelling variations:
curious conversations » curious conversion, serious conversation, courageous conversations
union conversations » win conversations, design conversations, driven conversations
20th century » 18th century
ref history » reef history, brief history, bief history
2 germany » 7 germany, 2 german, 8 germany
2021 20th » 2021 24th, 2020 20th, 2021 10th

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)) %2 germany %ref history %2021 20th century%22.
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (curious conversations)) %2 germany %ref history %2021 20th century%22*.