Dear Hassan,
for what I can see you're missing some part in your structure / query.
You should create another View with a main query similar to the one you already have.
Once you've that you should add a filter to the query and tell it to:
"Filter by taxonomy parent" -> "Parent is the taxonomy selected by the parent view".
Finally you should insert this View inside the loop of the parent taxonomy View.
Please rember to add fields to both Parent View and Child View in order to display Terms information.
To sum up you need:
1. A parent view which the taxonomy you want.
2. A child View which filters by parent View .
3. Inserting the child view in the MetaHTML of the parent – with the "V" button.
4. The fields you want to display declared for both.
Please let me know if there is anything else I can assist you with.
