Welcome to the forums,
I'm assuming that you have the downloaded (ESD) install file(s) still? If so yes you can. It is no different than when you originally installed the program. Just run the *.exe file. You will need your serial number handy. If you don't have it AND you registered it with Corel, just go to their website, log-in to your account, and navigate to
Your Registered Products, and you'll find your serial number.
Now if you did not back-up or save your original full version download file, you could try downloading a trial version. Then try entering your serial number for you full purchased version. I'm not sure this will work, but worth a try as a last resort. One final thing is IF you purchased
Download Insurance, which provides you with 2yrs of getting an additional download link, then just go that route.