Encourage your child to sleep as often as he or she likes. Read your child a story or have your child listen to an audio book to make it easier to fall asleep. Your child needs as much rest as they can get. If you decide to give medicine, try to stick to one product, such as acetaminophen or ibuprofen, rather than alternating medications or giving combinations of medications. Ask your doctor or pharmacist about which medicines might be appropriate for your child.  Do not give ibuprofen to a child under 6 months old.  Do not give cough and cold medicines to a child under 4 years old, and preferably not until at least 8 years old. These medicines have the potential to cause life-threatening side effects and have not been shown to be very effective either.  Do not give infants, children, or teenagers acetylsalicylic acid (aspirin) because this can cause a rare but serious illness called Reye’s syndrome. Add ¼ teaspoon of regular table salt into 8 ounces of lukewarm water. Have your child gargle and spit out the salty water when finished. Gargling with salt water can help relieve throat pain. For younger children or for nasal congestion, you can also use salt water (saline) nasal drops or sprays. You can make a saline spray yourself or buy some at the pharmacy. For infants, you can use a bulb syringe to suction the nose after using the drops. Avoid smoking around your child and avoid wearing especially strong perfumes. Postpone activities like painting or cleaning. The fumes can irritate your child’s throat and lungs and make their illness worse. Periodically open the windows in your child’s room to keep the air fresh. Do this when the child is in the bathroom so they don’t get cold. Give your child extra blankets as necessary.

How would you rephrase that briefly using Vietnamese?
Hãy để cho trẻ nghỉ ngơi thật nhiều. Sử dụng thuốc không cần kê đơn một cách cẩn trọng. Khuyến khích trẻ súc miệng bằng nước muối ấm. Giữ cho nhà bạn tránh khỏi những thứ gây khó chịu. Thông khí phòng của trẻ.