Perhaps you should try some spelling variations:
railroads corporation » railroad corporation, railroad corporations, railroad operation
rand corporation » said corporation, road corporation, england corporation
a corporation » _ corporation, a corporate

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: ((((rand corporation) OR (a corporation))) OR (railroads corporation)) monograph series.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand corporation) OR (a corporation))) or (railroads corporation)) monograph series".
• Adding a wildcard symbol may retrieve word variants: ((((rand corporation) OR (a corporation))) or (railroads corporation)) monograph series*.