Perhaps you should try some spelling variations:
"nuclear physics, heavy sons, hadrons" » "nuclear physics, heavy mesons, hadrons", "nuclear physics, heavy sour, hadrons"
"nuclear physics, heavy ions, 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 sons, hadrons") OR ((("nuclear physics, heavy ions, hadrons") OR ("nuclear physics, heavy ion, hadrons")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nuclear physics, heavy sons, hadrons\") or (((\"nuclear physics, heavy ions, hadrons\") OR (\"nuclear physics, heavy ion, hadrons\"))))".
• Removing quotes may allow a broader search: (( nuclear physics, heavy sons, hadrons ) or ((( nuclear physics, heavy ions, hadrons ) OR ( nuclear physics, heavy ion, hadrons )))).
• Adding a wildcard symbol may retrieve word variants: (("nuclear physics, heavy sons, hadrons") or ((("nuclear physics, heavy ions, hadrons") OR ("nuclear physics, heavy ion, hadrons"))))*.