Perhaps you should try some spelling variations:
"nuclear physics, heavy mesons, hadrons" » "nuclear physics, heavy metals, hadrons"
"nuclear physics, heavy ions, hadrons" » "nuclear physics, heavy sons, hadrons", "nuclear physics, heavy ion, hadrons", "nuclear physics, heavy ins, hadrons"

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: (("nuclear physics, heavy mesons, hadrons") OR ("nuclear physics, heavy ions, hadrons")).
• Removing quotes may allow a broader search: (( nuclear physics, heavy mesons, hadrons ) or ( nuclear physics, heavy ions, hadrons )).
• Adding a wildcard symbol may retrieve word variants: (("nuclear physics, heavy mesons, hadrons") or ("nuclear physics, heavy ions, hadrons"))*.