Should it convert entities like &#0000; ?

I have a string like

`&#x428;&#x43B;&#x438;&#x444;&#x43E;&#x432;&#x430;&#x43B;&#x44C;&#x43D;&#x44B;&#x435; &#x438; &#x43F;&#x43E;&#x43B;&#x438;&#x440;&#x43E;&#x432;&#x430;&#x43B;&#x44C;&#x43D;&#x44B;&#x435; &#x43C;&#x430;&#x448;&#x438;&#x43D;&#x44B; `

This should be HTML Entities and it can be decode to 
`Шлифовальные и полировальные машины`

But it doesn't work.