If the deer dies of wounds inflicted by your shot within a reasonable time, it is a kill, no matter if you call Miss Cleo to find the deer. By reasonable time I mean 12 hours or so. Not several days or a week later from infection.
12 years ago I shot a buck that was found, but too late and was rotting. I was within feet of him crawling around on my hands and knees without seeing him. I consider him one of my bow kills. I didn't want another deer that year I wanted him, whether I found him in time to butcher or not. I swore to myself then and there that if the same situation arose, I would recover it in time.