Perhaps you should try some spelling variations:
"general operative" » "general operation", "general operating", "general preoperative"
"general relations" » "general regulations", "general reflections", "general equations"
"general relativity" » "general relatively"

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: (("general relativity") OR ((("general operative") OR ("general relations")))).
• Removing quotes may allow a broader search: (( general relativity ) or ((( general operative ) or ( general relations )))).
• Adding a wildcard symbol may retrieve word variants: (("general relativity") or ((("general operative") or ("general relations"))))*.