If you're using the Windows settings to add languages, only languages that have a microphone icon potentially support speech recognition.
That said, while Russian is apparently not supported, Australian does appear to be.
I'm not sure why the Australian recognition engine doesn't show up for you, but if you're looking to enable Russian speech recognition you'll have to use Speech Platform 11 instead, which does list Russian as a supported language that can be installed.
Information and links to install Speech Platform 11, can be found
here; Do note the listed limitations.