Perhaps you should try some spelling variations:
great conversations » agent conversations, creative conversations, what conversation
chat conversations » what conversation, agent conversations, _ conversations
bief history » brief history, brief hystory, imf history
20th century » 18th century
2.1 germany » 21 germany, 2017 germany, 9.13 germany
ref history » reef history, brief history, imf history
2.2 20th » 2020 20th, 2023 20th, 2021 20th
%christianity » %christian

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: %christianity ((great conversations) OR (chat conversations)) %2.1 germany %((ref history) OR (bief history)) %2.2 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christianity ((great conversations) OR (chat conversations)) %2.1 germany %((ref history) or (bief history)) %2.2 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %christianity ((great conversations) OR (chat conversations)) %2.1 germany %((ref history) or (bief history)) %2.2 20th century%22*.