Perhaps you should try some spelling variations:
when conversations » open conversations, agent conversations, chain conversations
design conclusions » design conclusion
win conversations » ai conversations, ip conversations, iv conversations
20th century » 18th century
21 germany » 11 germany, 2 germany, 20 germany
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 ((((win conversations) OR (when conversations))) OR (design conclusions)) %21 germany %2f history %20 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((((win conversations) OR (when conversations))) or (design conclusions)) %21 germany %2f history %20 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((((win conversations) OR (when conversations))) or (design conclusions)) %21 germany %2f history %20 20th century%22*.