Perhaps you should try some spelling variations:
union conversations » design conversations, driven conversations, invent conversations
win conversations » when conversations, ai conversations, ip conversations
imf history » brief history
2f germany » 2 germany, 20 germany, 21 germany
2f history » etf history, ref history, tnf history
_ germany » _ german
2020 20th » 2020 16th, 2020 2021, 2020 5th
2f 20th » 20 20th, 2.2 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: %christian ((union conversations) OR (win conversations)) %((2f germany) OR (((7 germany) OR (_ germany)))) %((2f history) OR (imf history)) %((2f 20th) OR (2020 20th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian ((union conversations) OR (win conversations)) %((2f germany) or (((7 germany) or (_ germany)))) %((2f history) or (imf history)) %((2f 20th) or (2020 20th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %christian ((union conversations) OR (win conversations)) %((2f germany) or (((7 germany) or (_ germany)))) %((2f history) or (imf history)) %((2f 20th) or (2020 20th)) century%22*.