Perhaps you should try some spelling variations:
curious conversations » curious conversion, serious conversation, conscious conversations
reef fishery » reef fishes, reef fish
20th century » 18th century
ref history » reef history, brief history, bief history
21 germany » 2.1 germany, 11 germany, 2 germany
2023 20th » 2023 26th, 2023 10th, 2020 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) OR (courageous conversations)) %21 germany %((ref history) OR (reef fishery)) %2023 20th century%22.
• Adding a wildcard symbol may retrieve word variants: %22christian ((curious conversations) or (courageous conversations)) %21 germany %((ref history) or (reef fishery)) %2023 20th century%22*.