Perhaps you should try some spelling variations:
"speculative empirical" » "speculative practical", "simulation empirical", "speculative prices"
"speculative capital" » "speculative practical"
"speculative faith" » "speculative data", "speculative being"

Try widening your search to All Fields.

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: (("speculative faith") OR ((("speculative capital") OR ("speculative empirical")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"speculative faith\") or (((\"speculative capital\") OR (\"speculative empirical\"))))".
• Removing quotes may allow a broader search: (( speculative faith ) or ((( speculative capital ) OR ( speculative empirical )))).
• Adding a wildcard symbol may retrieve word variants: (("speculative faith") or ((("speculative capital") OR ("speculative empirical"))))*.