First, read the English article below.

Take a hot shower and inhale the steam. This can help loosen the congestion in the nose, which can drip down into your chest and cause cough. It also helps moisturize dry air, which can also cause coughing. At night, run a humidifier and breathe in the warm vapor. This method is helpful for coughs caused by colds, allergies, and asthma. Humidifiers need to be cleaned out regularly. Otherwise, they may cause more harm than good. Mold, other fungi, and bacteria can build up inside the machine and get transferred into the air alongside the steam. You may instinctively start with large, hearty coughs as soon as a coughing fit comes on, but building up to these large coughs slowly can actually help you get rid of a coughing fit faster. This is especially helpful if you have a moist cough. When a coughing fit begins, start by taking a series of small, light coughs. These coughs will not produce much mucus. At the end of your series of small coughs, do one big cough. The small coughs move the mucus toward the top of your air passage and the large cough has enough force to bring the mucus out. Coughing in this method will prevent your throat from becoming more irritated. Since an irritated throat is more likely to cause continued coughing, making your throat less irritated should help you get rid of your cough faster. Chronic coughs are often caused or worsened by airborne irritants. These irritants can cause chronic sinus irritation, leading to chronic coughing due to the excess mucus. The most obvious irritant to avoid is tobacco smoke. Perfumes and scented bathroom sprays are also known to trigger chronic coughs and should be avoided at least for the duration of your cough if you want your cough to leave quicker. 

Now, please write a short abstract for it in Vietnamese. Abstract:
Hít hơi nước ấm. Thay đổi cách ho. Loại bỏ các chất kích ứng trong không khí.