Stuffed noses can cause or worsen snoring, so have your snorer use a decongestant spray or medication before bed. Make sure to get sprays specifically designed for nighttime use, since  daytime sprays meant to be used may not be as effective in combatting snoring. We know that smoking can cause a number of health problems, and snoring is one of them. Ask the snorer to look into quitting smoking for their health--and your sleep schedule! A doctor may recommend things like nicotine gum or a nicotine patch to gradually ease your partner off tobacco. They may also recommend support groups in the area or online to help the person quit. You may be dealing with a chronic snorer whose noisy nighttime breathing might be caused by an underlying medical condition like sleep apnea. Head to your doctor to rule out or diagnose underlying issues.  The doctor may want to do X-rays or other scans to check for problems in the airway. A doctor may want to conduct a sleep study. This can be done at home by your partner reporting sleep issues. The snorer also may spend a night in the hospital for doctors to observe their sleep. If the snorer is diagnosed with a specific condition, treatment for that condition can help with snoring. Treatments depend on the condition, but could involve using a sleep mask to help with nighttime breathing. If there is a problem with the snorer's throat or airway, in rare cases surgery may be used to correct the issue.

TL;DR in Vietnamese:
Cho người ngủ ngáy uống thuốc thông mũi để trị ngáy. Khuyến khích người ngủ ngáy hỏi bác sĩ về việc cai thuốc lá. Đưa người ngủ ngáy đến gặp bác sĩ để loại trừ các bệnh lý tiềm ẩn. Giúp người ngủ ngáy lựa chọn các phương pháp điều trị.