First, read the English article below.

If the choking child (between ages one and eight) has become unresponsive, you should first assess the situation. Quickly look around for food, toys, or whatever else may have caused the choking. See if the unresponsive child shows any signs of breathing—chest rising or hearing breathing when you place your ear close to the child’s nose and mouth. If someone other than you is around, have that person call 911 while you begin taking first aid steps for the child. Note that if you’re the only person around and the child isn’t breathing at all, you should begin CPR before calling 911, ensuring that the child receives circulation and oxygen. If you’re the only person around, but others are within earshot, then proceed through the next steps while periodically yelling for help. Ideally, someone else will be able to call 911 as you attend to the child. With the child flat, tilt his head back and open his mouth. If you can see the object, remove it, but only if the object is easily removed. If the object is lodged, you don’t want to risk pushing it farther into the child’s throat. If the child is unconscious or shows no signs of breathing, skip to the next step. This step should only be taken if the child is conscious; if the child is unconscious, begin CPR immediately.' If the choking child shows signs of reduced breathing, then you want to attempt to clear the airway by performing an abdominal thrust—also known as the Heimlich maneuver. To perform the maneuver:  Wrap both of your arms around the child’s waist while tipping him or her slightly forward. Form a fist with one of your hands and position it on the child’s stomach just barely above the navel. Grab your fist with your other hand. Thrust the fist upward into the child’s abdomen quickly. Perform five times if necessary while watching to see if the object dislodges. Check for breathing. If the child stops breathing completely at any point or becomes unconscious, then proceed to CPR. If the the child is unconscious then you need to begin emergency CPR to... 

Now, please write a short abstract for it in Vietnamese. Abstract:
Kiểm tra hơi thở. Nhờ người gọi số điện thoại cấp cứu 115. Tìm dị vật chặn đường thở. Cố gắng làm thông đường thở nếu trẻ còn tỉnh. Thực hiện thủ thuật ấn ngực. Kiểm tra đường thở của trẻ. Thực hiện hà hơi thổi ngạt nếu bạn đã được huấn luyện thao thao tác này. Gọi 115 nếu bạn chỉ có một mình. Tiếp tục thực hiện thủ thuật CPR.