Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christian upon » christians upon, christian union, christianity upon
brief hystory » brief herstory, brief story, bief history
20th century » 18th century
reef history » reeves history, imf history
reef fishery » reef fishes, reef fish
etf history » imf history, tnf history, beruf history
ref history » bief history, imf history, tnf history
2f germany » 2 germany, 20 germany, 21 germany
90 20th » 20 20th, 94 20th, 1990 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 %((((((reef history) OR (reef fishery))) OR (((ref history) OR (etf history))))) OR (((brief history) OR (brief hystory)))) %90 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian upon conversations %2f germany %((((((reef history) OR (reef fishery))) or (((ref history) or (etf history))))) or (((brief history) or (brief hystory)))) %90 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %christian upon conversations %2f germany %((((((reef history) OR (reef fishery))) or (((ref history) or (etf history))))) or (((brief history) or (brief hystory)))) %90 20th century%22*.