Perhaps you should try some spelling variations:
"key regulatory properties" » "key regularity properties", "key regular properties", "key regulatory perspectives", "key regulator properties", "key regulators properties", "4 regulatory properties"
"3 regulatory properties" » "3 regularity properties", "3 regular properties", "3 regulatory perspectives", "_ regulatory properties", "a regulatory properties", "3 regulation properties"

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: "((\"key regulatory properties\") OR (\"3 regulatory properties\"))*".
• Removing quotes may allow a broader search: (( key regulatory properties ) OR ( 3 regulatory properties ))*.