There are plenty of models that have an option for a backlit keyboard, yes.

When ordering my new M4500 (got it yesterday) I was able to select a backlit keyboard as an option.

It did take me a bit to figure out how to turn the backlight on though.  At first I thought it hadn't been installed because it wasn't on.  I had to google it. 

Hint: Hold the Fn key and then press the left or right arrow keys.

If you are asking me if I like it, yes I like it very much. I can work in a dark room if I want too.  I often want too.  :emotion-21:

The only problem is,  I don't how to find them ??  Where do I search from??

The backlit keyboard is a terrific option and really, should be standard on all laptops.  :emotion-1: