Perhaps you should try some spelling variations:
design conversations » design considerations, design construction, design consideration
union conversations » win conversations, driven conversations, invent conversations
design conclusions » design conclusion
ref history » reef history, brief history, bief history
20 germany » 2 germany, 7 germany, 8 germany
21 germany » 11 germany, 2 germany, 7 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 (((design conversations) OR (design conclusions)))) %((20 germany) OR (21 germany)) %ref history %2.2 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (((design conversations) OR (design conclusions)))) %((20 germany) or (21 germany)) %ref history %2.2 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (((design conversations) OR (design conclusions)))) %((20 germany) or (21 germany)) %ref history %2.2 18th century%22*.