Perhaps you should try some spelling variations:
"parallel interconnection" » "parallel interconnects", "particles interconnection", "parallel intersection"
"mail interconnections" » "basic interconnections", "chip interconnections", "tool 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: (("mail interconnections") OR ("parallel interconnection")).
• Removing quotes may allow a broader search: (( mail interconnections ) or ( parallel interconnection )).
• Adding a wildcard symbol may retrieve word variants: (("mail interconnections") or ("parallel interconnection"))*.