Non-English blogger post url

When we publish a post the first time, Blogger take the post title as post URL, that's permalink, Blogger, after publishing a post, changing either the post title or the date or both,  will not change the post URL.

I use Chinese in one of my blogs, blogger just use post numbers as blog post url, such as "2009/01/blog-post_07.html", year/month/post-number, in this case it's the seventh post in January, 2009. 

This happens to Japanese blogs, too.  Blogger use 'blog-post_XX.html' as Japanese post URL, XX is the number of the blog post.

This is not very good in terms of SEO (Search Engine Optimisation).  

The first cardinal rule of SEO is, put key words into:

• blog or website URL
• blog title
• individual post URL (permalink)
• individual post title

How about other languages, such as French or Hindi or Arabic?

I browse through blogs, found this one(sorry about my ignorance, I don't what this language is):

Banda Filarmónica de Monção (Post title)

banda-filarmnica-de-mono.html (Post URL)

Here Blogger take out non-ASCII characters,  leave ASCII characters as post URL. This is a disaster in terms of SEO, indeed.