Perhaps you should try some spelling variations:
structural functionalism » structural functions, structure functionality, structured functional
"structural functional" » "structure function"
structure 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: (("((structural functionalism) or (structure functional))") OR ((("structural functional") OR ("structure functions")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"((structural functionalism) or (structure functional))\") or (((\"structural functional\") OR (\"structure functions\"))))".
• Removing quotes may allow a broader search: (( ((structural functionalism) or (structure functional)) ) or ((( structural functional ) OR ( structure functions )))).
• Adding a wildcard symbol may retrieve word variants: (("((structural functionalism) or (structure functional))") or ((("structural functional") OR ("structure functions"))))*.