What's your question? Ask

It sounds like your orchids may need more humidity. Since the blooms have faded, you can remove them and the stems along with any other dead growth. You should also be seeing some new growth at some point. This article will help determine if the plant is still alive: https://www.gardeningknowhow.com/plant-problems/environmental/how-to-tell-if-a-plant-is-dead-and-how-to-recover-an-almost-dead-plant.htm For additional help, here is more information: https://www.gardeningknowhow.com/ornamental/flowers/orchids/indoor-orchid-care.htm, https://www.gardeningknowhow.com/houseplants/hpgen/raise-humidity-for-houseplants.htm

This article should be of some help to you: https://www.gardeningknowhow.com/ornamental/flowers/orchids/indoor-orchid-care.htm

Generally leave the stem on, because sometimes they sprout new plants or flowers. The most important thing to do with an orchid is to repot it into orchid mix if it's in sphagnum moss, which is the way most commercial orchids are grown today. Here are a couple of articles to help you: https://www.gardeningknowhow.com/ornamental/flowers/orchids/indoor-orchid-care.htm
https://www.gardeningknowhow.com/ornamental/flowers/orchids/repotting-orchid-plants.htm

It's kind of hard to know about humidity, etc, when you don't know what kind of orchid you have. There must be several hundred kinds in Burma. If you're anywhere near a botanical garden, you might take your orchid to them to see if they can identify it, or if they can guide you to an orchid expert who might know about it. I do know it's hard to tell about many of them without seeing the flowers, but an expert could probably identify at least the family, and give you a general idea of care. Lacking an identification, I would kind of go for the middle ground - take care of it pretty much like you're caring for the others, and hope for the best. This article might have some tips you haven't encountered before: https://www.gardeningknowhow.com/ornamental/flowers/orchids/indoor-orchid-care.htm

To start the seeds, soak them in water for 24 hours. Then plant them in damp soil about a half inch down. Keep the pots of sown seeds in a warm place until they sprout. Once they sprout, they need bright light and the soil needs to be kept damp (but not soaked).

These links should help you determine how to care for your orchid.

https://www.youtube.com/watch?v=6Md542TrlVg

https://www.aos.org/Default.aspx?id=217