Perhaps you should try some spelling variations:
spoken conversations » spoken conversation, open conversations, oboen conversations
union conversations » win conversations, design conversations, driven conversations
upon conversations » open conversations, human conversations, oboen conversations
20th century » 18th century
ref history » reef history, brief history, bief history
imf history » brief history
21 germany » 11 germany, 2 germany, 20 germany
2.2 20th » 2020 20th, 2023 20th, 2021 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: %christian ((((upon conversations) OR (union conversations))) OR (spoken conversations)) %21 germany %((ref history) OR (imf history)) %2.2 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian ((((upon conversations) OR (union conversations))) or (spoken conversations)) %21 germany %((ref history) or (imf history)) %2.2 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %christian ((((upon conversations) OR (union conversations))) or (spoken conversations)) %21 germany %((ref history) or (imf history)) %2.2 20th century%22*.