Perhaps you should try some spelling variations:
commanding general » commander general, commands general, comparing general
combining general » combining several, combining generator, containing general
combining generic » combining genetic, combining genomic, combining geometric
army » arms

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: ((commanding general) OR (((combining general) OR (combining generic)))) of the united states army.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((commanding general) or (((combining general) OR (combining generic)))) of the united states army".
• Adding a wildcard symbol may retrieve word variants: ((commanding general) or (((combining general) OR (combining generic)))) of the united states army*.