well. I only seach in cutetube in the way I seach on Youtube.
If I search in youtube on the beatles I can find this song on the top list.
If I seach for "get back" I also can chose among many recordings of this song and the beatles versions come among the first 10.

When I did the same search with cutetube I had sorted it by popularity knowing that this clip is viewed 12 000 000 times.
If I search for get back the beatles I find nothing.

but If I search the beatles Get back and sort by relavance if find the clip.

Evidently it is easier to find a special clip in youtube compared to cutetube.