On the old Ancestry search screen, I chose the "Family Trees" tab and entered a check in "Exact Search" and "Seaver" in the "Last Name" box. Here's the result:
As you can see, it found entries in Public Member Trees (3,799), Personal Member Trees (3,544), One World Tree (2,007) and Ancestry World Tree (11,646).
In the "new Ancestry Search," I checked "Exact matches" and put "Seaver" in the "Last Name" box. The Family Trees section is way down the results list, and I clicked on the link to See All Family Tree results. Here's what I see: