Get data from different datasets?

Hello,

I have some datasets which are in several workspaces at Power BI srvice. I would like to create a new report in Power BI desktop which get data from some of mentioned datasets on the workspaces. Problem is at, Power BI allows to get data from ony one dataset, there is no option to choose more than one datasets to the report. Have you seen the same problem. Can you help me to fix it? Thanks!