Know it gets warm & humid in your section of the World but they are babies and need to be kept warm, your room temperature is not enough for them. Do you have a heat lamp or light for them?
They also need more space, get another box or two and join it ... Put the heat lamp on one side of the box so they can warm up or move away from the heat if they get too warm. Do you have a coop prepared for them when they are ready to go out?
They need to have access to food & water 24/7, put some marbles or pebbles in their water dish, that way they won't drown. The food is Grower? Or Broiler feed? You need to be able to eat/drink as much and often as they want. Removing the water & food is not a good practice.
We are trying to help you, the chicks are cold & probably hungry, maybe even dehydrated. So get a bigger box or make one, get a heat lamp or light to keep them warm & leave the food/water in their box.