Perhaps you should try some spelling variations:
combining generator » combining genetic, combining generic, combining literature
combining general » combining generic, containing general, comprising general
combining several » containing several
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: ((((combining general) OR (combining generator))) OR (combining several)) of the united states army.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((combining general) OR (combining generator))) or (combining several)) of the united states army".
• Adding a wildcard symbol may retrieve word variants: ((((combining general) OR (combining generator))) or (combining several)) of the united states army*.