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