Perhaps you should try some spelling variations:
structural functionalization » structure functionalization, structural functionality, structural regionalization
structural functionalized » structural functionalism, structural functionality, structure functionality
"structural functional" » "structure function", "structure functions"

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: (("structural functional") OR ("((structural functionalized) or (structural functionalization))")).
• Removing quotes may allow a broader search: (( structural functional ) or ( ((structural functionalized) or (structural functionalization)) )).
• Adding a wildcard symbol may retrieve word variants: (("structural functional") or ("((structural functionalized) or (structural functionalization))"))*.