Perhaps you should try some spelling variations:
from conversations » from conversational, roman conversations, bot conversations
from conversation » from conservation, from compensation, _ conversation
bief history » brief hystory, reef history, ref history
21 germany » 11 germany, 2 germany, 20 germany

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 conversation)) %21 germany %((imf history) OR (((bief history) OR (brief history)))) %2.2 ((20th century) OR (18th century))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christianity ((from conversations) OR (from conversation)) %21 germany %((imf history) or (((bief history) or (brief history)))) %2.2 ((20th century) or (18th century))%22".
• Adding a wildcard symbol may retrieve word variants: %christianity ((from conversations) OR (from conversation)) %21 germany %((imf history) or (((bief history) or (brief history)))) %2.2 ((20th century) or (18th century))%22*.