Perhaps you should try some spelling variations:
"high-fat diets" » "high-fat diet", "high-fat dietts", "high-fat diskts", "high-fat doests"
"high-fat file" » "high-flat file", "high-fat free"
"high-fat die" » "high-fat diet", "high-fat disk", "high-fat does"

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: (((("high-fat die") OR ("high-fat diets"))) OR ("high-fat file")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"high-fat die\") OR (\"high-fat diets\"))) or (\"high-fat file\"))".
• Removing quotes may allow a broader search: (((( high-fat die ) OR ( high-fat diets ))) or ( high-fat file )).
• Adding a wildcard symbol may retrieve word variants: (((("high-fat die") OR ("high-fat diets"))) or ("high-fat file"))*.