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
11 germany » 11 german, 1918 germany, _ germany
2 germany » _ germany, 2 german, 8 germany
7 germany » _ germany

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 germany) OR (7 germany)))) %reef history %2f 18th century%22.
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %((2 germany) or (((11 germany) or (7 germany)))) %reef history %2f 18th century%22*.