The correct spelling for the two-word phrase "golden spleen" can be explained using the International Phonetic Alphabet (IPA). "Golden" is spelled as /ˈɡəʊldən/, with the symbol "ə" representing the schwa sound and the stress placed on the first syllable. "Spleen" is spelled as /spliːn/, with the stress on the first syllable and the long "e" sound represented by "iː." These two words are unrelated words that have been combined to form an unusual phrase.