Perhaps you should try some spelling variations:
union conversations » design conversations, driven conversations, invent conversations
win conversations » when conversations, ai conversations, ip conversations
ref history » reef history, bief history, imf history
21 germany » 11 germany, 2 germany, 20 germany
2023 10th » 2022 10th, 2023 11th, 2023 15th
2013 10th » 2015 10th, 2013 8th

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)) %21 germany %((ref history) OR (brief history)) %((2023 10th) OR (2013 10th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (win conversations)) %21 germany %((ref history) or (brief history)) %((2023 10th) OR (2013 10th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (win conversations)) %21 germany %((ref history) or (brief history)) %((2023 10th) OR (2013 10th)) century%22*.