Searching for dissertations on ProQuest

Hi,
my uni hasn’t paid for a proquest subscription in a while and I’m looking for this dissertation:

https://www.proquest.com/openview/c46b3e9dc911765d4822da688b6a813a/1?pq-origsite=gscholar&cbl=18750&diss=y

How do I search for it on SciHub as it does not have a DOI number?