Perhaps you should try some spelling variations:
"socioethical theory" » "sociological theory", "bioethical theory", "ii:ethical theory"
"biological theory" » "ecological theory", "sociological theory", "topological theory", "biolocal theory", "bioecological theory", "bioethical theory"
"logical theory" » "local theory", "ecological theory", "ethical theory"

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: (((((("biological theory") OR ("logical theory"))) OR ("socioethical theory"))) OR ("biological therapy")).
• Removing quotes may allow a broader search: (((((( biological theory ) or ( logical theory ))) or ( socioethical theory ))) or ( biological therapy )).
• Adding a wildcard symbol may retrieve word variants: (((((("biological theory") or ("logical theory"))) or ("socioethical theory"))) or ("biological therapy"))*.