Perhaps you should try some spelling variations:
structural functionalized » structural functionalism, structural functionalization, structure functionality
structural functionality » structural functionalism, structure functionality, structural conditionality
"structural functional" » "structure function", "structure functions"
"structure 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 ("structure functional"))) OR ("((structural functionalized) or (structural functionality))")).
• Removing quotes may allow a broader search: (((( structural functional ) or ( structure functional ))) or ( ((structural functionalized) or (structural functionality)) )).
• Adding a wildcard symbol may retrieve word variants: (((("structural functional") or ("structure functional"))) or ("((structural functionalized) or (structural functionality))"))*.