Perhaps you should try some spelling variations:
"spiritual interconnection" » "optical interconnection", "digital interconnections", "spiritual connection"
"partial interconnections" » "particles interconnection", "optical interconnections", "mail interconnections", "particles interconnections", "vertical interconnections", "parallel interconnections"
"partial interconnection" » "particles interconnection", "vertical interconnection", "parallel interconnection"
"optimal interconnection" » "optimal interconnections", "optical interconnection", "optical interconnections"

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: (("partial interconnections") OR ((("partial interconnection") OR ((("spiritual interconnection") OR ("optimal interconnection")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"partial interconnections\") or (((\"partial interconnection\") or (((\"spiritual interconnection\") OR (\"optimal interconnection\"))))))".
• Removing quotes may allow a broader search: (( partial interconnections ) or ((( partial interconnection ) or ((( spiritual interconnection ) OR ( optimal interconnection )))))).
• Adding a wildcard symbol may retrieve word variants: (("partial interconnections") or ((("partial interconnection") or ((("spiritual interconnection") OR ("optimal interconnection"))))))*.