Perhaps you should try some spelling variations:
"formal hardware disposal" » "formal hardware digital", "formal hardware disks", "virtual hardware disposal"
"model garbage disposal" » "model sewage disposal", "model carcass disposal", "model surface disposal", "der garbage disposal"

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: (("model garbage disposal") OR ("formal hardware disposal")).
• Removing quotes may allow a broader search: (( model garbage disposal ) or ( formal hardware disposal )).
• Adding a wildcard symbol may retrieve word variants: (("model garbage disposal") or ("formal hardware disposal"))*.