Perhaps you should try some spelling variations:
"cost of a healthful diet" » "cost of a healthful life", "cost of a health diet", "cost of _ healthful diet"
"cost of a health does" » "cost of a health do", "cost of a health diet", "cost of a health deep"
"cost of a healthy diet" » "cost of _ healthy diet"

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