Perhaps you should try some spelling variations:
"social theorists" » "social theories", "social theorizing", "special theories", "social theoriess", "special theoriess"
"social theorist" » "social theories", "special theories"
"sociale theorie" » "social theories", "formale theorie", "lokale theorie"
"formal theories" » "formal theory", "social theories"

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: (((((("social theorist") OR ((("sociale theorie") OR ("social theory"))))) OR ("social theorists"))) OR ("formal theories")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"social theorist\") or (((\"sociale theorie\") OR (\"social theory\"))))) or (\"social theorists\"))) or (\"formal theories\"))".
• Removing quotes may allow a broader search: (((((( social theorist ) or ((( sociale theorie ) OR ( social theory ))))) or ( social theorists ))) or ( formal theories )).
• Adding a wildcard symbol may retrieve word variants: (((((("social theorist") or ((("sociale theorie") OR ("social theory"))))) or ("social theorists"))) or ("formal theories"))*.