Perhaps you should try some spelling variations:
serious conversation » curious conversations, serious conideration, versus conversation
union conversations » win conversations, design conversations, driven conversations
bief history » brief history, brief hystory, imf history
21 germany » 11 germany, 2 germany, 20 germany
2.2 18th » 2021 18th, 2022 18th, 2023 18th

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 ((union conversations) OR (serious conversation)) %21 germany %bief history %2.2 18th century%22.
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (serious conversation)) %21 germany %bief history %2.2 18th century%22*.