"Space" in keyword and domain name ranking questio

[yowow]

i own a domain name websie with a good keyword. For example "xwork.com"
now if i do a search for "xwork" on google my website is listed on 1st position. but if i do a search with "x work" (notice the space) my website doesn't even get listed. The space between x and work is killing the ranking for my website. since i think most people are typing name using space between x and work i don't think i am getting any help even if i own xwork.com. any suggestion how can get my website listed on top or atleast within first five position. since we can't own domain name using "space" would a dash "x-work.com" would work? just curious!!!!

[cbp]

the x-work domain name won't help. You need to get sites that link to you to have the x work (with space) as the anchor text.

CBP