Moodle actualy has a separate question bank for each course. So, yes, as admin, you have permission to see all the questions, but ony by going to the relevant course.
Quiz
Accessing previously used questions
ဆွေးနွေးပွဲ သော့ခတ်ထားသောကြောင့် အကြောင်းပြန်၍ မရတော့ပါ။