Coriander from Seed in the Tropics

I have tried to grow coriander from seeds using various methods but none of them sprouted, do you have any suggestions? I live in Singapore.

Try starting them in a cooler place such as an air-continued room or even a fridge until they sprout and then move the seed box to warmer place in the light. Also, coriander seeds are short-lived especially in warm humid areas – important to get fresh seeds.