Perhaps you should try some spelling variations:
"united states / institutional logic" » "united states / institutional logics", "united states / institutional level"
"united states / institutional law" » "united states / institutional level", "united states / institutional logics"

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: (((((("united states / institutional law") OR ("united states / institutional logic"))) OR ("united states / constitutional law"))) OR ("united states / institutions law")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"united states / institutional law\") OR (\"united states / institutional logic\"))) or (\"united states / constitutional law\"))) or (\"united states / institutions law\"))".
• Removing quotes may allow a broader search: (((((( united states / institutional law ) OR ( united states / institutional logic ))) or ( united states / constitutional law ))) or ( united states / institutions law )).
• Adding a wildcard symbol may retrieve word variants: (((((("united states / institutional law") OR ("united states / institutional logic"))) or ("united states / constitutional law"))) or ("united states / institutions law"))*.