does this actually work?

I read that I can search for a file on my hard disk by invoking Alfred (option space) and typing find 'filename'. A file on my hard disk! It opens google. I am told that I can start a program by invoking Alfred and starting to type the program name. It doesn't do that. In particular, if I copy the example in https://www.alfredapp.com/help/kb/search-your-mac-with-alfred/ and enter W, like is shown in section 1, I do not get the systems settings listed at all. How is this useful?