Perhaps you should try some spelling variations:
"oxford early christian duties / oxford early christian duties" » "oxford every christian duties / oxford every christian duties"
"oxford early christian duty / oxford early christian duty" » "oxford every christian duty / oxford every christian duty", "oxford early christian's duty / oxford early christian's duty"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"oxford early christian duties / oxford early christian duties\") OR (\"oxford early christian duty / oxford early christian duty\"))".
• Removing quotes may allow a broader search: (( oxford early christian duties / oxford early christian duties ) OR ( oxford early christian duty / oxford early christian duty )).
• Adding a wildcard symbol may retrieve word variants: (("oxford early christian duties / oxford early christian duties") OR ("oxford early christian duty / oxford early christian duty"))*.