Perhaps you should try some spelling variations:
"nuclear physics, heavy oins, hadrons" » "nuclear physics, heavy oils, hadrons", "nuclear physics, heavy rains, hadrons", "nuclear physics, heavy oil, hadrons"
"nuclear physics, heavy ins, hadrons" » "nuclear physics, heavy ions, hadrons", "nuclear physics, heavy rains, hadrons", "nuclear physics, heavy ends, hadrons"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nuclear physics, heavy ins, hadrons\") OR (\"nuclear physics, heavy oins, hadrons\"))".
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