Perhaps you should try some spelling variations:
upon conversations » union conversations, spoken conversations, human conversations
open conversations » agent conversations, roman conversations, content conversations
brief hystory » brief history, brief herstory, brief story
reef fishery » reef fishes, reef fish
20th century » 18th century
ref history » reef history, brief history, bief history
21 germany » 11 germany, 2 germany, 20 germany
2023 20th » 2023 26th, 2023 10th, 2020 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: %christian ((upon conversations) OR (open conversations)) %21 germany %((((ref history) OR (brief hystory))) OR (reef fishery)) %2023 20th century%22.
• Adding a wildcard symbol may retrieve word variants: %christian ((upon conversations) or (open conversations)) %21 germany %((((ref history) or (brief hystory))) or (reef fishery)) %2023 20th century%22*.