title: YouTube Data API v3 search using channel ID doesn't return some videos
body: <p>I am trying to get all videos for August using the channel ID, but there were 3 videos that don't reflect on the data returned by the API.</p>
  <p>The data returned to me started in July 16th, but there were videos in later July and two in August.</p>
  <p>I'm using Python to request and parse the returned data.</p>
  <p>Here is the channel where it happened to not scrape the video well but works in other channel: <code>UCT4ayiqWW9qOqOq_u8trQTg</code>. The API url:</p>
  <p><code>https://www.googleapis.com/youtube/v3/search?key=...&amp;channelId=UCT4ayiqWW9qOqOq_u8trQTg&amp;part=snippet,id&amp;order=date&amp;maxResults=20</code>.</p>
  <p>I can provide the returned data if needed.</p>