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", "said corporation biography series", "railroad corporation biography series", "road corporation biography pericles", "road corporation biography sources", "road corporation biography sermons"
"road corporation monograph series" » "a corporation monograph series", "said corporation monograph series", "railroad corporation monograph series"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"road corporation monograph series\") OR (\"road corporation biography series\"))".
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