First, read the English article below.

Dendrobium orchids can store water and are more tolerant of dry soil than overly wet soil. Water them every 1-2 weeks. Allow the top 1 inch (2.5 cm) of the soil to dry before re-watering.  Some species of dendrobium orchids have water-storing pseudobulbs, meaning they can go 2 weeks between waterings. It is preferable to water your orchid in the morning so that its leaves are dry before night. Purchase a balanced fertilizer designed specifically for orchids to feed your plant. Dilute it with water in a 4:1 ratio for regular fertilization. Apply the fertilizer once a week as directed. Alternatively, use the full-strength fertilizer once a month to feed your plant. Ideally, the dendrobium orchid should have a 50-70% humidity level around them. Increase humidity by running a humidifier near your plant. You can also place a shallow tray filled with water near your plant to help increase humidity in the immediate area. Do not place the plant in the tray of water, as the water may rot the roots of the orchid over time. After your orchid has finished blooming, use sharp scissors to cut off the flowering stem. Make the cut at a slight angle, just above the point it emerges from the rest of the plant. Doing this will allow for new growth to emerge during the next growing period. Not trimming your orchid after it blooms may prevent it from blooming again. 

Now, please write a short abstract for it in Vietnamese. Abstract:
Tưới cây mỗi tuần và để cho lớp đất bề mặt khô hẳn giữa các lần tưới. Bón phân pha loãng chuyên dành cho lan mỗi tuần một lần. Duy trì môi trường có độ ẩm tối thiểu 50% cho cây lan. Cắt bỏ hoa để kích thích cây lan mọc lại.