Perhaps you should try some spelling variations:
"head storage and release" » "heat storage and release", "heated storage and release", "thread storage and release"
"lead storage and release" » "seed storage and release", "cloud storage and release", "cold storage and release"
"heap storage and release" » "heat storage and release", "wheat storage and release", "heat storages and release"

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: (((("head storage and release") OR ("lead storage and release"))) OR ("heap storage and release")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"head storage and release\") OR (\"lead storage and release\"))) or (\"heap storage and release\"))".
• Removing quotes may allow a broader search: (((( head storage and release ) OR ( lead storage and release ))) or ( heap storage and release )).
• Adding a wildcard symbol may retrieve word variants: (((("head storage and release") OR ("lead storage and release"))) or ("heap storage and release"))*.