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