Perhaps you should try some spelling variations:
"railroads corporation" » "railroad corporations", "railroad operation", "railroads competitions"
"said corporation" » "_ 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: (((("said corporation") OR ((("railroad corporation") OR ("railroads corporation"))))) OR ("a corporation")).
• Removing quotes may allow a broader search: (((( said corporation ) or ((( railroad corporation ) or ( railroads corporation ))))) or ( a corporation )).
• Adding a wildcard symbol may retrieve word variants: (((("said corporation") or ((("railroad corporation") or ("railroads corporation"))))) or ("a corporation"))*.