Perhaps you should try some spelling variations:
"rand corporation biography series" » "rand reformation biography series", "rand federation biography series", "rand corporate geography series", "said corporation biography series", "a corporation biography series", "england corporation biography series", "rand corporation biography pericles", "rand corporation biography sources", "rand corporation biography sermons"
"road corporation biography series" » "road reformation biography series", "road federation biography series", "road corporate geography series", "road corporation biography pericles", "road corporation biography sources", "road corporation biography sermons", "a corporation biography series", "said corporation biography series", "railroad corporation biography series"
"road corporate biography series" » "road corporate geography series", "road corporate demography series", "road complete biography series", "road corporate biography pericles", "road corporate biography sources", "road corporate biography sermons", "rad corporate biography series", "board corporate biography series", "good corporate biography series"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("rand corporation biography series") OR ((("road corporation biography series") OR ("road corporate biography series")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"rand corporation biography series\") or (((\"road corporation biography series\") OR (\"road corporate biography series\"))))".
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• Adding a wildcard symbol may retrieve word variants: (("rand corporation biography series") or ((("road corporation biography series") OR ("road corporate biography series"))))*.