According the description, this API works with Instagram, YouTube, TikTok, Facebook, Twitter, Telegram, Viber, Dzen, VK.com, OK.ru, Rutube, VC.ru, TenChat.
However, method GET Search has an optional parameter socialTypes. This method has the abbreviatons for Instagram, Facebook, Twitter, YouTube, TikTok and Telegram. Are there abbreviatons for the other social networks?