Perhaps you should try some spelling variations:
"road corporation biography series" » "road corporate biography series", "road reformation biography series", "road federation biography series", "a corporation biography series", "railroad corporation biography series", "_ corporation biography series", "road corporation biography pericles", "road corporation biography sermons", "road corporation biography studies"
"road corporation biography sources" » "road corporate biography sources", "road reformation biography sources", "road federation biography sources", "road corporation bibliography resources", "a corporation biography sources", "railroad corporation biography sources", "_ corporation biography sources"
"said corporation biography sources" » "said corporate biography sources", "said reformation biography sources", "said federation biography sources", "said corporation bibliography resources", "a corporation biography sources", "_ corporation biography sources"

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: (("road corporation biography series") OR ((("road corporation biography sources") OR ("said corporation biography sources")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"road corporation biography series\") or (((\"road corporation biography sources\") OR (\"said corporation biography sources\"))))".
• Removing quotes may allow a broader search: (( road corporation biography series ) or ((( road corporation biography sources ) OR ( said corporation biography sources )))).
• Adding a wildcard symbol may retrieve word variants: (("road corporation biography series") or ((("road corporation biography sources") OR ("said corporation biography sources"))))*.