Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christian upon » christians upon, christian union, christianity upon
reef history » brief history, reeves history, reef fishery
bief history » brief history, brief hystory, imf history
2 germany » 12 germany, 7 germany, 2 german
11 german » 1 german

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) OR (11 german)) %((reef history) OR (bief history)) %2f 18th century%22.
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %((2 germany) or (11 german)) %((reef history) or (bief history)) %2f 18th century%22*.