First, read the English article below.

For the best results, you should use as sharp a pair of scissors as possible. Very sharp blades minimize damage to the plant's cells, which reduces the amount of energy it must expend healing the wound.  Any sharp, sturdy pair of scissors will do, but the shape and strength of kitchen shears make them a great choice for this job. To minimize the risk of transferring any plant diseases, especially if you’re trimming more than one plant, wipe down the scissors with rubbing alcohol both before and after using them. Leaves with small brown areas along their edges or tips still produce energy for the plant through photosynthesis. However, if a leaf is almost entirely brown and dry, then it’s not producing energy and can be removed entirely by cutting it away.  If more than half of the leaf’s surface area is brown—and especially if it’s at least two-thirds brown—then it’s a good candidate for full removal. The preferred way to remove a whole leaf is to cut the base of its stem with sharp scissors. Alternatively, you can pluck it by pinching the base of the stem between the nails of your thumb and index fingers. Study the tip shape of some healthy leaves, and reproduce that shape as closely as possible with your cuts. For instance, if you’re dealing with long, straight leaves with pointed tips, make two angled cuts at the tip in order to re-create a triangular shape at the end.  Shaping the cuts is only necessary for aesthetic purposes. Cutting straight across the tip of the leaf to remove the dead area isn’t any more damaging to the plant. With some practice, your shaped leaves will be indistinguishable from the fully healthy ones! Some indoor gardeners insist that it’s best to leave a very small sliver of the brown area remaining on the leaf. In doing this, you avoid opening a fresh wound in the healthy part of the leaf, which might stress the plant and cause further browning. If you’re only trimming one or two leaves, leaving some brown behind doesn’t need to be a concern. However, if you’re trimming many leaves... 

Now, please write a short abstract for it in Vietnamese. Abstract:
Dùng kéo sắc hoặc kéo làm bếp để tỉa lá. Chỉ cắt bỏ toàn bộ lá nếu nó đã bị nâu gần hết. Cắt theo hình dáng đầu lá. Để lại một phần nhỏ diện tích lá màu nâu nếu bạn muốn. Dùng đầu lá nâu ủ phân bón nếu không nghi ngờ lá bị nhiễm bệnh.