There seems to be an issue with some channels not appearing in the search results.
This channel is a valid channel: twitch.tv/thiagohass
But it’s not appearing in these search results: https://api.twitch.tv/kraken/search/channels?type=suggest&limit=100&query=thiagohass&client_id=kimne78kx3ncx6brgo4mv6wki5h1ko&api_version=5