Chillis for kitchen gardens

The media has reported that locally in Goa the prices of chillis are increasing rapidly from Rs 80 per kilo to Rs 120 per kilo, however for those who have a kitchen garden, chillies can be the easiest plants to grow. Till a few decades ago, it was easy to find chilli plants growing profusely and chillies were sufficient for the home requirements.
However in 2015, 2016 it appears to be more difficult to grow chillis in goa. Though a large number of seeds have been planted, the germination rate remains fairly low. Only one chilli plant has flowered in the last one year. In May 2016, the plant started flowering and had 4 small white flowers, and no chillis till date.
Any suggestions to increase the chilli yield will be appreciated.