First, read the English article below.

Food allergy can be one of the contributing factors to IBS in cats. Choosing foods that are hypoallergenic in nature can alleviate symptoms.  Your vet will likely recommend you find a protein and carbohydrate source your cat has not eaten before. Rabbit, venison, or duck-based diets are usually a good starting option as most conventional cat foods do not use these meats. Certain cat food brands, such as Royal Cainn Limited Ingredients Diet, use hypoallergenic products only. You might want to switch to this brand of cat food and see if symptoms improve. Low residue foods are designed to be easy to digest and absorb, lessening bowel issues related to IBS.  Most conventional cat food brands offer a low residue option, but might not be labeled as low residue. Instead, the company might use labels like "Scientific Formula." Ask your veterinarian what brands and categories of cat food you should buy if you're trying a low residue diet.  Iams provides foods that are specifically labeled low residue and made for cats with intestinal problems. This might be a good route. If a low residue brand is not available in the store, you can order a bag online. Fiber is key in many species, cats included, for regular and smooth bowel movements. Upping your cat's fiber intake could improve some of the diarrhea and stomach discomfort related to IBS. Many brands of cat food, such as Royal Cainn, are labeled high fiber. They might be difficult to find in department stores, as most owners do not prioritize a cat's fiber instinct, but you can always make the purchase online. 

Now, please write a short abstract for it in Vietnamese. Abstract:
Thử áp dụng chế độ ăn không gây dị ứng. Lựa chọn thực phẩm dư lượng thấp. Cho mèo ăn thực phẩm giàu chất xơ.