Using the URL filter
URL filters can be used to show and hide your surveys based on the URL the user is on.
How the URL filter matches your input
If the URL contains what you've filled out it will be a match.
If you fill out to include /blog then the survey will show on any URL that contains /blog, so it will show on /blog/post-1 and /blog/post-numero-dos. This is for useful for showing a survey on all your blog posts.
Include or exclude
You probably only need to include or exclude URLs, not both.
You only need them both in the case where you want to display the survey on all blogposts (set include on /blog) but want to exclude the survey on one of the blogposts (set exclude on /blog/example-post).