Perhaps you should try some spelling variations:
spoken conversations » spoken conversation, open conversations, oboen conversations
upon conversations » union conversations, open conversations, human conversations
bief history » brief history, brief hystory, imf history
20th century » 18th century
ref history » reef history, brief history, imf history
21 germany » 2 germany, 20 germany, 7 germany
11 germany » 11 german, 1918 germany, 7 germany
2.2 20th » 2020 20th, 2023 20th, 2021 20th

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 ((upon conversations) OR (spoken conversations)) %((21 germany) OR (11 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 ((upon conversations) OR (spoken conversations)) %((21 germany) or (11 germany)) %((ref history) or (bief history)) %2.2 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %christianity ((upon conversations) OR (spoken conversations)) %((21 germany) or (11 germany)) %((ref history) or (bief history)) %2.2 20th century%22*.