Perhaps you should try some spelling variations:
reef history » brief history, reeves history, reef fishery
ref history » brief history, bief history, imf history
2c public » 2 public, 22 public, c public
21 public » 2 public, 1 public, 11 public
23 green » 3 green, 13 green
24 1688 » 2 1688, 4 1688, 22 1688

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "%22finance%((2c public) OR (21 public)) %((23 green) OR (3 great)) britain %((ref history) OR (reef history)) %24 1688-1815%22".
• Adding a wildcard symbol may retrieve word variants: %22finance%((2c public) OR (21 public)) %((23 green) OR (3 great)) britain %((ref history) OR (reef history)) %24 1688-1815%22*.