Perhaps you should try some spelling variations:
design conclusions » design conclusion
win conversations » when conversations, ai conversations, ip conversations
9.13 germany » 9.14 germany, 9.15 germany, 9.16 germany
2f history » imf history, etf history, ref history
2f 20th » 2.2 20th
20 20th » 90 20th, 2019 20th, 2020 20th

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 (design conclusions)) %((7 germany) OR (9.13 germany)) %2f history %((2f 20th) OR (20 20th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((win conversations) or (design conclusions)) %((7 germany) or (9.13 germany)) %2f history %((2f 20th) OR (20 20th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((win conversations) or (design conclusions)) %((7 germany) or (9.13 germany)) %2f history %((2f 20th) OR (20 20th)) century%22*.