Perhaps you should try some spelling variations:
union conversations » design conversations, driven conversations, invent conversations
win conversations » when conversations, ai conversations, ip conversations
20th century » 18th century
2.1 germany » 21 germany, 2017 germany, 9.13 germany
2.1 history » 1.1 history, 601 history
2f history » imf history, etf history, ref history
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 (win conversations)) %((7 germany) OR (2.1 germany)) %((2f history) OR (2.1 history)) %20 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (win conversations)) %((7 germany) or (2.1 germany)) %((2f history) OR (2.1 history)) %20 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (win conversations)) %((7 germany) or (2.1 germany)) %((2f history) OR (2.1 history)) %20 20th century%22*.