Perhaps you should try some spelling variations:
"10 step energies" » "10 steric energies", "10 free energies", "10 gev energies"
"10 steps series" » "10 step series", "10 steps stages"
"10 des energies" » "10 des energie", "10 beam energies", "10 _ energies"
"10 steps seem" » "10 steps step", "10 steps set", "10 steps system"

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: (((("10 steps series") OR ((("10 step energies") OR ("10 des energies"))))) OR ("10 steps seem")).
• Removing quotes may allow a broader search: (((( 10 steps series ) or ((( 10 step energies ) or ( 10 des energies ))))) or ( 10 steps seem )).
• Adding a wildcard symbol may retrieve word variants: (((("10 steps series") or ((("10 step energies") or ("10 des energies"))))) or ("10 steps seem"))*.