Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christian upon » christians upon, christian union, christianity upon
1918 germany » 8 germany
bief history » brief history, brief hystory, imf history
20th century » 18th century
ref history » reef history, brief history, imf history
2f 20th » 20 20th, 2.2 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: %christian upon conversations %((7 germany) OR (1918 germany)) %((ref history) OR (bief history)) %2f 20th century%22.
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %((7 germany) or (1918 germany)) %((ref history) or (bief history)) %2f 20th century%22*.