I originally thought these were internal to MS. However, there are links to this so it looks like public knowledge. Check out the following fun links:
www.subservientprogrammer.com/
Can you exhaust the number of commands? If you do, please let me know. I have only tried a handful.
www.msdewey.com/
Not exactly what you would use if you were in a hurry for a search result. But it certainly keeps things light. I can imagine this type of approach for the elementary to middle school aged individuals. And perhaps instead of Ms. Dewey, you'd have an Einstein imposter.