Longtail URL's SEO NON Friendly

Hi is there anthing we can do with the longtail url’s to make them more seo friendly?

I have a Wordpress site with the Spred plugin and I get the longtail of “a+cat-A5dead89de447425d76bcb75a?productType=6&sellable=zramjl5lkXIeq59YXnDo-6-7&appearance=4”

If we can’t we can’t but is ther any way I can get the word “dead” removed from the longtail?