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