Pronunciation: [vˌiːətnˈe͡ɪ] (IPA)
Correct spelling for the English word "vietnay" is [vˌiːətnˈe͡ɪ], [vˌiːətnˈeɪ], [v_ˌiː__ə_t_n_ˈeɪ] (IPA phonetic alphabet).