Perhaps you should try some spelling variations:
"spiritual interconnection" » "optical interconnection", "digital interconnections", "optimal interconnection"
"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: (("optical interconnections") OR ((("partial interconnection") OR ("spiritual interconnection")))).
• Removing quotes may allow a broader search: (( optical interconnections ) or ((( partial interconnection ) or ( spiritual interconnection )))).
• Adding a wildcard symbol may retrieve word variants: (("optical interconnections") or ((("partial interconnection") or ("spiritual interconnection"))))*.