Perhaps you should try some spelling variations:
"materialises citizens" » "materialize citizens", "materialized citizens", "materials citizens", "materializes citizens", "materializeds citizens", "materialss citizens"
"materialises cities" » "materialize cities", "materialized cities", "materials cities", "materializes cities", "materializeds cities", "materialss cities"
"materialise cities" » "materialize cities", "materialized cities", "materials cities"

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: (("materialises citizens") OR ((("materialises cities") OR ("materialise cities"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"materialises citizens\") or (((\"materialises cities\") OR (\"materialise cities\"))))~".
• Removing quotes may allow a broader search: (( materialises citizens ) or ((( materialises cities ) OR ( materialise cities ))))~.
• Adding a wildcard symbol may retrieve word variants: (("materialises citizens") or ((("materialises cities") OR ("materialise cities"))))*.