Why is YouTube filtering search results?

For example if u search “anita sarkeesian” the video “5 reasons people like anita sarkeesian” doesnt show up, but if you search specifically this video it will show up. Try it yourself. I know youtube is probably doing that because it has a lot of dislikes. But I didnt know youtube warps my search results like that. They should be unbiased! this is outrageous for me! Moreover, I have this question on Quora, when I search this question in google “Why is YouTube filtering search results?” the Quora page DOESNT SHOW UP. WTF!