Hi!
1. I thought you only wanted to remove the text 🙂 You can turn off keyword suggestions entirely on the Autocomplete & Keywords suggestions -> Keyword suggestions panel: http://i.imgur.com/j0utqKp.png
2. I guess that’s because it counts as 2 (multibyte) characters in javascript. Try lowering the Minimal character count to 0 or 1 to trigger the search: http://i.imgur.com/zd8g9c8.png
3. Will definitely improve that in the future.