Q.Coconut Tree Doesn’t Flower
Two coconut trees side by side more than 8 years old growing fronds well and twenty feet tall now but no flowers is seen

Certified GKH Gardening Expert
Likely, the nutrient profile of the soil is not as it should be. Here are some articles that will help:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/test-soil-for-pests-and-diseases.htm
https://www.gardeningknowhow.com/edible/fruits/coconut/fertilizing-coconut-palm-trees.htm