Perhaps you should try some spelling variations:
corporation biography » reformation biography, corporate geography, migration biography
federation biography » reformation biography
corporate biography » corporate geography, corporate demography, complete biography
rand corporation » said corporation, road corporation, england corporation
biography series » biography pericles, biography sources, biography sermons
a corporation » _ corporation
a federation » _ federation, a federated

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