Please add an additional explanation when search fails.
I have found that 99% of the time when I get this page (https://www.familysearch.org/search/tree/results?count=100&q.birthLikeDate.from=1894&q.birthLikeDate.to=1894&q.birthLikePlace=Stord%2C%20Hordaland%2C%20Norway&q.givenName=johan ):
if I just refresh the browser window, the search works just fine. Clicking search again does not work. Going back is not helpful. Going to the FamilySearch Home Page is really not helpful. Adding a last name is not necessary.
Adding a message here, something like "Please refresh your browser window" or "Clicking Refresh on your browser may solve this problem," might help with one of the frustrations people have with the search page.