The Court probably wrote a decision explaining why the case was dismissed, however the decision may only be available at the court clerk's office, which is probably at the courthouse.

There may be despositions filed at the courthouse also, I would expect that they were submitted to the Court on the motion that got the case dismissed. You can look at these too, usually.

If appealed both sides submit briefs to the next higher court arguing why the lower court's decision should or should not be changed, together with copies of the papers the lower court looked at in deciding to dismiss the case. Check with the clerk's office to find out if a Notice of Appeal was filed.