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