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