Perhaps you should try some spelling variations:
"organizational studies, economics ecology" » "organizational studies, economics technology", "organizational studies, economics economic", "organizational studies, economics early", "organization studies, economics ecology", "organizations studies, economics ecology"
"organizational studies, economic geology" » "organization studies, economic geology", "organizations studies, economic geology"
"organizational studies, economic sociology" » "organization studies, economic sociology", "organizations studies, economic sociology"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("organizational studies, economics ecology") OR ((("organizational studies, economic geology") OR ("organizational studies, economic sociology")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"organizational studies, economics ecology\") or (((\"organizational studies, economic geology\") OR (\"organizational studies, economic sociology\"))))".
• Removing quotes may allow a broader search: (( organizational studies, economics ecology ) or ((( organizational studies, economic geology ) OR ( organizational studies, economic sociology )))).
• Adding a wildcard symbol may retrieve word variants: (("organizational studies, economics ecology") or ((("organizational studies, economic geology") OR ("organizational studies, economic sociology"))))*.