First, read the English article below.

Intranasal steroids, such as fluticasone (Flonase) and triamcinolone (Nasacort), which is now available over-the-counter, work by reducing inflammation in the nose. Nasal steroid spray has the benefit of having no major side effects like those caused by many oral decongestants and antihistamines, such as drowsiness and dry mouth. Note, however, that it takes a few days for the steroid to build up to its full effect; this means that you will not experience immediate relief.  If you're using Flonase, the typical dosage is one spray per nostril twice daily. There are also other nasal steroids available with a prescription, such as mometasone Furoate (Nasonex). Potential side effects include indigestion, nausea, and headaches. New guidelines have suggested that intranasal steroids should be the first line of treatment for sinus congestion. Some people find antihistamines useful, particularly in longer-lasting occurrences of sinus infections, because they can ease nasal congestion. Oral antihistamines include diphenhydramine (Benadryl), cetirizine (Zyrtec) and Loratadine (Claritin). Note, however, that some older antihistamines can have serious side effects for the sinuses, including the drying up of the mucous membranes of the nasal tissue and thickening the secretions, and can also cause drowsiness.  Take 25 milligrams of Benadryl every eight hours as needed for congestion. This drug may prove difficult to tolerate due to its side effects of drowsiness and “fogginess." Take 10 mg of Zyrtec once daily. Children older than six years of age may take this as well, in doses of 5-10 mg per day, depending on weight. Consult the instructions. This medication may cause some drowsiness. Take 10 mg of Claritin once daily. Second generation antihistamines such as this one have a much improved side effect profile and are less likely to cause drowsiness.  You could also try a prescription antihistamine nasal spray such as azelastine (Astelin, Astepro) or olopatadine hydrochloride (Patanase). Using an over-the-counter... 

Now, please write a short abstract for it in Vietnamese. Abstract:
Dùng thuốc xịt mũi Steroid. Uống thuốc kháng histamin. Dùng thuốc chữa nghẹt mũi.