Perhaps you should try some spelling variations:
union conversations » design conversations, driven conversations, invent conversations
win conversations » when conversations, ai conversations, ip conversations
reef history » reeves history, reef fishery, imf history
2.1 germany » 21 germany, 2017 germany, 9.13 germany
2.2 18th » 2021 18th, 2022 18th, 2023 18th

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 (win conversations)) %2.1 germany %((reef history) OR (brief history)) %2.2 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) OR (win conversations)) %2.1 germany %((reef history) or (brief history)) %2.2 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) OR (win conversations)) %2.1 germany %((reef history) or (brief history)) %2.2 18th century%22*.