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