Correct spelling for the English word "sterning" is [stˈɜːnɪŋ], [stˈɜːnɪŋ], [s_t_ˈɜː_n_ɪ_ŋ] (IPA phonetic alphabet).
I apologize, but it seems that "sterning" is not a recognized word in the English language. It might be a typographical error or a word from another language. If you could provide more context or clarification, I would be happy to assist you further.