at this point, Blog offers only two options for filtering: categories and authors as it is mentioned in this article
In case you want some extra options, maybe this discussion on the Velo forum will help you: https://www.wix.com/velo/forum/coding-with-velo/filter-blog-by-category-editor-x
along with this, we will forward your query to the Blog team, so they will take a closer look at your query