Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christian upon » christians upon, christian union, christianity upon
reeves history » waves history, lives history, archives history
reef history » reef fishery, imf history
20 germany » 2 germany, 7 germany, 8 germany
21 germany » 11 germany, 2 germany, 7 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 %((20 germany) OR (21 germany)) %((((reef history) OR (reeves history))) OR (brief history)) %2f 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian upon conversations %((20 germany) or (21 germany)) %((((reef history) OR (reeves history))) or (brief history)) %2f 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %((20 germany) or (21 germany)) %((((reef history) OR (reeves history))) or (brief history)) %2f 18th century%22*.