Pronunciation: [ˈə͡ʊhə͡ʊɪŋ] (IPA)
Correct spelling for the English word "ohohing" is [ˈə͡ʊhə͡ʊɪŋ], [ˈəʊhəʊɪŋ], [ˈəʊ_h_əʊ_ɪ_ŋ] (IPA phonetic alphabet).