Hello ,
Even i had thought about writing articles in my native language but frankly speaking i had failed miserably - my personal experience . maybe I did not do much of the promotion.
But it is always suggested that ENGLISH articles are sold the most , as good amount of world population wants and understand that language.
You can obviously try elance and odesk as i had seen that translation articles are required in there , and if you get a shot at them , maybe you can get hired for long term basis .
Thanks