Perhaps you should try some spelling variations:
union conversations » win conversations, design conversations, driven conversations
21 germany » 11 germany, 2 germany, 7 germany
20 germany » 2 germany, 7 germany, 8 germany
2f history » imf history, etf history, ref history
2f 20th » 2.2 20th
20 20th » 90 20th, 2019 20th, 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: %22christian ((union conversations) OR (design considerations)) %((21 germany) OR (20 germany)) %2f history %((2f 20th) OR (20 20th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (design considerations)) %((21 germany) or (20 germany)) %2f history %((2f 20th) OR (20 20th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (design considerations)) %((21 germany) or (20 germany)) %2f history %((2f 20th) OR (20 20th)) century%22*.