How would you translate french "bœuf" to american english? Well, we have, "beef". But someone would also just use boeuf which might have a closer recemblance with the pronounciation of the original word. So whats most important, to have an as direct as possible spelling to how it is pronounced or just make an own version of it.

We have the same with a lot of names in the west as well, Jacob, Jakob, Yakob, Yakov, Jakub, Jakup etc.