Let's look at an example: find cases which have considered the case Telebooth Pty Ltd v Telstra Corporation Ltd  1 VR 337
There are a few ways to find out if this case has been judicially considered by any subsequent cases:
Search a case citator, using the Cases Cited or References to Cases field.
Find the case in the citator and check (CaseBase) or (FirstPoint)
Search the full text of the various law report series and unreported judgments online.