Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christian upon » christians upon, christian union, christianity upon
20th century » 18th century
bief history » brief hystory, imf history, ref history
reef history » reeves history, reef fishery, imf history
etf history » imf history, ref history, tnf history
20 germany » 7 germany, 8 germany, 5 germany
2f germany » 21 germany, 25 germany, 26 germany
2 germany » 12 germany, 7 germany, 2 german
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 %((((2f germany) OR (20 germany))) OR (2 germany)) %((((etf history) OR (reef history))) OR (((bief history) OR (brief history)))) %2f 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian upon conversations %((((2f germany) or (20 germany))) or (2 germany)) %((((etf history) OR (reef history))) or (((bief history) or (brief history)))) %2f 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %((((2f germany) or (20 germany))) or (2 germany)) %((((etf history) OR (reef history))) or (((bief history) or (brief history)))) %2f 20th century%22*.