If you don't recognise the full name of a VOR, you can ask ATC what the 3 letter code is - no shame in that - I do it and I've got 7,000 hours !! Usually, though if you look at the PLOG/Flight plan, you will be able to spot the three letter code they mean, and if not 100% sure you can just confirm it with your trainer - "KRH is that?".
Something that helped me with the radio was to get an app that would write the full name of the VORs so I put them in the app before my flight just to have seen the names before the flight.
I think the app was called "name that nav" or something.
Or you could try and take home some old en-route charts