Perhaps you should try some spelling variations:
"eu law: legal basis, constitutional law" » "eu law: legal basic, constitutional law", "eu law: legal basis, institutional law", "eu law: legal basis, constitution law"
"eu law: neural basis, constitutional law" » "eu law: neural basic, constitutional law", "eu law: neural basis, institutional law", "eu law: neural basis, constitution law"

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: "((\"eu law: legal basis, constitutional law\") OR (\"eu law: neural basis, constitutional law\"))*".
• Removing quotes may allow a broader search: (( eu law: legal basis, constitutional law ) OR ( eu law: neural basis, constitutional law ))*.