Perhaps you should try some spelling variations:
"classical and continuous physics" » "classical and continuum physics", "classical and continuous phase", "classical and continuous passive"
"classical and continue physics" » "classical and continuum physics", "classical and continuum phyisics", "classical and continue his"

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: (("classical and continuous physics") OR ("classical and continue physics")).
• Removing quotes may allow a broader search: (( classical and continuous physics ) or ( classical and continue physics )).
• Adding a wildcard symbol may retrieve word variants: (("classical and continuous physics") or ("classical and continue physics"))*.