How to get custom taxonomy terms based on another taxonomy?

How to list out all the terms of a custom taxonomy that are relative in another custom taxonomy?

I am creating a filter page for a CPT with multiple custom taxonomies.

Please see the screenshot below:

• Custom Post Type: English cpt_english
• Custom Taxonomy: Courses
• Terms: course-a, course-b, course-c
• Custom Taxonomy: Difficulties
• Terms: easy, advanced , pro
• Custom Taxonomy: Tasks tasks
• Terms: task1, task2, task3, task4

The screen is html markup, not php generated code.

Question: How can I list out all the terms of a taxonomy based on another taxonomy? For example, The type: Task 1 has Difficulty: Easy, Advanced, Pro But Task 2 only has Easy and Pro ... so when clicking Task2, I do not want to show Advanced there, and Task 3 doesn't even has Courses... how can I achieve it with coding?

So what I meant is that, amount all the CPT that are associated with Task1(term name) of a custom taxonomy task, these posts are also associated with term easy, advanced and pro from another taxonomy difficulty

However, amount the CPT items associated with Task2, none of them are associated with advanced ... so I do not want to list out advanced there

I know I can use get_terms and then foreach to list out all the terms of a taxonomy. But how I can get_terms of taxonomy_a based on taxonomy_b ?