Cọ hoặc cạo các mẩu vụn đã khô. Làm ẩm chỗ bẩn bằng dung dịch tẩy rửa. Để dung dịch lưu lại trên vết bẩn. Dùng bàn chải chà dung dịch trên vết ố. Dùng nước thấm cho đến khi loại bỏ hết dung dịch. Thuê máy hút bụi hơi nước để xử lý các vết bẩn cứng đầu.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Depending on the surface you're working on, you can use a stiff bristled or soft bristled brush. An old toothbrush will work in a pinch. Loosen any dried crust from the upholstery and brush it off using a small brush or vacuum cleaner. You can use any solution that is safe for the surface you are cleaning. A commercial carpet cleaner, leather cleaner, or upholstery cleaner will work; you can even use a laundry stain remover for surfaces like cloth or carpet. You can make your own solution.  If y