Perhaps you should try some spelling variations:
"heavy doping physics" » "heavy doing physics", "heavy docking physics", "heavy during physics", "heavy loading physics", "heavy smoking physics", "heavy ending physics"
"heavy spin physics" » "heavy saline physics"
"heavy ion physics" » "heavy ions physics"

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: (("heavy ion physics") OR ((("heavy spin physics") OR ("heavy doping physics"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"heavy ion physics\") or (((\"heavy spin physics\") OR (\"heavy doping physics\"))))*".
• Removing quotes may allow a broader search: (( heavy ion physics ) or ((( heavy spin physics ) OR ( heavy doping physics ))))*.