Perhaps you should try some spelling variations:
"general regulations" » "federal regulation", "gene regulation", "genetic regulation"
"general operative" » "general operation", "general operating", "general preoperative"
"general relative" » "general relating", "general relations", "general ergative"
"general relation" » "general relations", "general revolution", "general circulation"
"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 relative") OR ("general operative"))) OR ((("general relation") OR ("general regulations")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"general relativity\") or (((((\"general relative\") or (\"general operative\"))) or (((\"general relation\") OR (\"general regulations\"))))))".
• Removing quotes may allow a broader search: (( general relativity ) or ((((( general relative ) or ( general operative ))) or ((( general relation ) OR ( general regulations )))))).
• Adding a wildcard symbol may retrieve word variants: (("general relativity") or ((((("general relative") or ("general operative"))) or ((("general relation") OR ("general regulations"))))))*.