Perhaps you should try some spelling variations:
2f revolution » 2 revolution, 25 revolution, 2.0 revolution
28 revolution » 2 revolution, 8 revolution, 28 evolution
reef history » brief history, reeves history, reef fishery
ref history » brief history, bief history, etf history
imf history » brief history
2f causes » 2 causes, 20 causes, 22 causes
2c 1789 » 23 1789, 22 1789, 28 1789
22 1799 » 29 1799, 22 1793, 22 1798

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: %22france %((((ref history) OR (reef history))) OR (imf history)) %((2f revolution) OR (28 revolution))%((2c 1789) OR (22 1799))-1799 %2f causes%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22france %((((ref history) OR (reef history))) or (imf history)) %((2f revolution) or (28 revolution))%((2c 1789) or (22 1799))-1799 %2f causes%22".
• Adding a wildcard symbol may retrieve word variants: %22france %((((ref history) OR (reef history))) or (imf history)) %((2f revolution) or (28 revolution))%((2c 1789) or (22 1799))-1799 %2f causes%22*.