Perhaps you should try some spelling variations:
union conversations » win conversations, design conversations, driven conversations
design conclusions » design conclusion
2.1 germany » 2017 germany, 9.13 germany, 9.14 germany
etf history » reef history, imf history, ref history
2f history » imf history, ref history, tnf history
21 germany » 11 germany, 2 germany, 20 germany
2021 20th » 2021 24th, 2020 20th, 2021 10th
2.2 20th » 2020 20th, 2023 20th, 2022 20th
90 20th » 20 20th, 94 20th, 1990 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: %22christian ((union conversations) OR (design conclusions)) %((21 germany) OR (2.1 germany)) %((2f history) OR (etf history)) %((((2.2 20th) OR (2021 20th))) OR (90 20th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (design conclusions)) %((21 germany) or (2.1 germany)) %((2f history) or (etf history)) %((((2.2 20th) OR (2021 20th))) or (90 20th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (design conclusions)) %((21 germany) or (2.1 germany)) %((2f history) or (etf history)) %((((2.2 20th) OR (2021 20th))) or (90 20th)) century%22*.