Follow this process:
1. Create a live event
2. Stream your video to the live event after having properly optimized your event title, description, and tags.
After you do those, your video will rank for the keyword depending on competition, but it will not stick for a long time.
Solution:
Get get views and engagements to the video (you can use crowdsearch - hxxp://crowdsearch.me to do that.)
Use translation, end cards, etc.
Improve the authority of the channel
Doing some or all of these will help your video ranking, but you have to bear in mind that everything still depend on how difficult the competition in that niche is.