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

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