Perhaps you should try some spelling variations:
both conversations » bot conversations, bush conversations, tough conversations
both conversation » tooth conversation, bot conversations, fourth conversation
ref history » reef history, brief history, bief history
imf history » brief history
11 germany » 11 german, 1918 germany, _ germany
2.2 18th » 2021 18th, 2022 18th, 2023 18th

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 ((both conversations) OR (both conversation)) %11 germany %((ref history) OR (imf history)) %2.2 18th century%22.
• Adding a wildcard symbol may retrieve word variants: %christian ((both conversations) or (both conversation)) %11 germany %((ref history) or (imf history)) %2.2 18th century%22*.