Perhaps you should try some spelling variations:
"authors' licensing and collecting special" » "authors' licensing and collections special", "authors' licensing and collecting spatial", "authors' licensing and collecting specimen"
"authors' licensing and collecting social" » "authors' licensing and collections social", "authors' licensing and collective social", "authors' licensing and connecting social"

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: "((\"authors' licensing and collecting social\") OR (\"authors' licensing and collecting special\"))".
• Removing quotes may allow a broader search: (( authors' licensing and collecting social ) OR ( authors' licensing and collecting special )).
• Adding a wildcard symbol may retrieve word variants: (("authors' licensing and collecting social") OR ("authors' licensing and collecting special"))*.