Microsoft stream video search is pretty much broken. I searched for a substring from the video's title and it's not able to filter out the results and show me the main video in the search results list. I think this is a very basic feature of a search window. For example, if you have a video uploaded named abc_def and you search for "abc_" it should show you the results with abc_def and other matching items. It not doing this currently. This needs to be fixed.