Perhaps you should try some spelling variations:
"optimal interconnections" » "optimal interconnection", "optical interconnection", "optical interconnects"
"optical interconnections" » "optical interconnects", "optical interactions"
"partial interconnection" » "partial interconnections", "particles interconnection", "vertical interconnection"

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: (((("optimal interconnections") OR ("optical interconnections"))) OR ("partial interconnection")).
• Removing quotes may allow a broader search: (((( optimal interconnections ) or ( optical interconnections ))) or ( partial interconnection )).
• Adding a wildcard symbol may retrieve word variants: (((("optimal interconnections") or ("optical interconnections"))) or ("partial interconnection"))*.