It is possible that you may find one of the system attributes or perhaps one of the custom attribute that you have just added missing when you try to create an Advanced find view and try to filter by providing the filter attribute.
Advanced Find appears to list out only those attributes that have the Searchable property set to “Yes”. To fix the above problem, edit the missing attribute and set its searchable property to “Yes” and then publish the entity customization.
You will now find this in the Attribute list in the Advanced find designer.