How to activate bluetooth headset to my MObile nokia 2730 classic

I have china make bluetooth to install my phone nokia 2730 classic... I get on my bluetooth and in my mobile I go to settting Menu and connectivity where is my bluetooth option is their the go to paired device here is no one device and give to search but it shows no device found check that the device you are searching for has bluetooth switched on and is set visible.... What would I do for this problem?

placeholder text for bug in Chrome