Perhaps you should try some spelling variations:
from conversational » from conversation, from conventional, from conformational
from conversations » from conversation, roman conversations, bot conversations
20th century » 18th century
bief history » brief hystory, imf history, reef history
1918 germany » 8 germany
ref history » reef history, imf history, etf history
11 germany » 11 german, 7 germany, 8 germany
21 germany » 2.1 germany, 2 germany, 20 germany
2021 20th » 2021 24th, 2020 20th, 2021 10th

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 ((from conversations) OR (from conversational)) %((21 germany) OR (((11 germany) OR (1918 germany)))) %((ref history) OR (((bief history) OR (brief history)))) %2021 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christianity ((from conversations) OR (from conversational)) %((21 germany) or (((11 germany) or (1918 germany)))) %((ref history) or (((bief history) or (brief history)))) %2021 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %christianity ((from conversations) OR (from conversational)) %((21 germany) or (((11 germany) or (1918 germany)))) %((ref history) or (((bief history) or (brief history)))) %2021 20th century%22*.