Perhaps you should try some spelling variations:
"solid states physics" » "solid states physical", "solid stars physics", "solid status physical", "said states physics", "solid systems physics", "solid wastes physics"
"solid spine physics" » "solid spin physics", "solid shine physics", "solid science physics", "solid spinal physics", "solid skins physics", "solids spin physics"
"solid space physics" » "solid spaces physics", "void space physics", "solid face 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: (((((("solid spine physics") OR ("solid states physics"))) OR ("solid space physics"))) OR ("solid state physics")).
• Removing quotes may allow a broader search: (((((( solid spine physics ) or ( solid states physics ))) or ( solid space physics ))) or ( solid state physics )).
• Adding a wildcard symbol may retrieve word variants: (((((("solid spine physics") or ("solid states physics"))) or ("solid space physics"))) or ("solid state physics"))*.