Hi Jack
She mentioned this is SharePoint 2013 Foundation. I suspect that it is not available in Foundation edition as it depends on "Filter Search" feature in Enterprise. I read it somewhere that it is not available in even Standard edition, I can't seem to find
the article again so don't take my words for granted.
Anyway, I am currently having the exact same issues as I am working on a project built on SP2013 Foundation. I do not have the Search Box on top of the list like I usually have in SP2013 Enterprise.
I am looking for any official information to confirm this and at the same time, looking for an work around as well. Will post here if I have any work around.
Best Regards
Alex