Perhaps you should try some spelling variations:
"formal epistemology" » "personal epistemology"
"legal epistemology" » "logic epistemology", "personal epistemology"
"moral epistemology" » "logic epistemology", "personal epistemology"

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