Perhaps you should try some spelling variations:
corporation biography » corporate biography, reformation biography, federation biography
said corporation » a corporation
biography series » biography pericles, biography sources, biography sermons
_ corporation » _ 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 monograph series ) OR ( said corporation biography series ))) OR ( _ corporation monograph series )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( said corporation monograph series ) OR ( said corporation biography series ))) or ( _ corporation monograph series ))".
• Adding a wildcard symbol may retrieve word variants: (((( said corporation monograph series ) OR ( said corporation biography series ))) or ( _ corporation monograph series ))*.