A page that displays posts defined by two specific categories at the same time

Can I get a post assigned to a parent category and a sub category to be displayed in a page that displays all posts defined by those two specific categories at the same time?

WordPress’ standard is to have pages list out all the posts under one category, but what about having a page that lists posts defined by two categories at the same time? This means that the posts displayed in such a page have categories mutually dependent on each other. Fewer posts would appear because the criterion would be further specified than usual.