Perhaps you should try some spelling variations:
"cost of _ healthy dies" » "cost of _ healthy diets", "cost of _ healthy ties", "cost of _ healthy aims", "cost of _ health dies"
"cost of a healthy diet" » "cost of a health diet", "cost of a healthy die"

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: (("cost of _ healthy dies") OR ("cost of a healthy diet")).
• Removing quotes may allow a broader search: (( cost of _ healthy dies ) or ( cost of a healthy diet )).
• Adding a wildcard symbol may retrieve word variants: (("cost of _ healthy dies") or ("cost of a healthy diet"))*.