title: YouTube API v3: language filter
body: <p>How to retrieve Russian videos by specific category (YouTube API v3). For example, request that needed “videos category ‘Comedy’ on Russian language“: </p>
  
  <p><code>https://www.googleapis.com/youtube/v3/search?part=snippet&amp;order=date&amp;regionCode=RU&amp;type=video&amp;videoCategoryId=23&amp;lr=ru_RU&amp;key={KEY}</code></p>
  
  <p>I'ts not work.</p>
  
  <p>I do not get a response: <a href="https://code.google.com/p/gdata-issues/issues/detail?id=4803" rel="nofollow">https://code.google.com/p/gdata-issues/issues/detail?id=4803</a></p>