Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christian upon » christians upon, christian union, christianity upon
bief history » brief history, brief hystory, imf history
20th century » 18th century
21 germany » 2.1 germany, 11 germany, 2 germany
1 german » 3 german, 5 german, 2 german
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 %((21 germany) OR (1 german)) %bief history %2.2 20th century%22.
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %((21 germany) or (1 german)) %bief history %2.2 20th century%22*.