Perhaps you should try some spelling variations:
diligence preparation » evidence preparation, science preparation, intelligence preparation
stock diligence » utmost diligence
c 1873 » _ 1873, 5 1873, 9 1873
c 1870 » c 1800, _ 1870, c 1850
1 1873 » _ 1873, 1 1803, 1 1813
east » fast, easy

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: east india stock diligence preparation ((((c 1873) OR (c 1870))) OR (1 1873)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "east india stock diligence preparation ((((c 1873) OR (c 1870))) or (1 1873))".
• Adding a wildcard symbol may retrieve word variants: east india stock diligence preparation ((((c 1873) OR (c 1870))) or (1 1873))*.