[SEO] Doubt?

I have a doubt regarding the domain name. suppose my keyword is 'planet earth' and i purchase a domain with the name 'earthplanet.com' or something like 'earthplanet4.com' . So will google count it as a positive point for including the keyword in the domain or this keyword will not be counted?

g read left to right. so inverting the kw would have g skip over the 1st. better off doing.... planet-earth.com or planetearthonline.com

try putting 'i' in front of the keyword, always works for me