Perhaps you should try some spelling variations:
"cost of a healthy diets" » "cost of a healthy adults", "cost of a healthy city", "cost of _ healthy diets"
"cost of a healthy dies" » "cost of a healthy ties", "cost of a healthy aims", "cost of a healthy days", "cost of _ healthy dies"
"cost of a health diet" » "cost of a health dietary", "cost of a healthful diet", "cost of a unhealthy diet"
"cost of a healthy diet" » "cost of _ healthy diet"

Try widening your search to All Fields.

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 healthy dies") OR ("cost of a healthy diets"))) OR ((("cost of a healthy diet") OR ("cost of a health diet")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"cost of a healthy dies\") or (\"cost of a healthy diets\"))) or (((\"cost of a healthy diet\") OR (\"cost of a health diet\"))))".
• Removing quotes may allow a broader search: (((( cost of a healthy dies ) or ( cost of a healthy diets ))) or ((( cost of a healthy diet ) OR ( cost of a health diet )))).
• Adding a wildcard symbol may retrieve word variants: (((("cost of a healthy dies") or ("cost of a healthy diets"))) or ((("cost of a healthy diet") OR ("cost of a health diet"))))*.