Perhaps you should try some spelling variations:
design conversations » design considerations, design construction, design conclusions
union conversations » win conversations, driven conversations, invent conversations
20th century » 18th century
2017 germany » 20 germany, 17 germany, 2006 germany
2.1 germany » 9.13 germany, 9.14 germany, 9.15 germany
ref history » reef history, brief history, bief history
2f history » 2.1 history, imf history, etf history
21 germany » 11 germany, 2 germany, 20 germany
2019 20th » 2019 4th, 2019 6th, 2019 5th

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 conversations)) %((21 germany) OR (((2.1 germany) OR (2017 germany)))) %((2f history) OR (ref history)) %2019 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (design conversations)) %((21 germany) or (((2.1 germany) or (2017 germany)))) %((2f history) OR (ref history)) %2019 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (design conversations)) %((21 germany) or (((2.1 germany) or (2017 germany)))) %((2f history) OR (ref history)) %2019 20th century%22*.