I have a site that I'm trying to target a keyword that looks something like "Gigabyte RU-J44U"

In webmaster I noticed that it lists many keywords it picks up on my site, but it doesn't seam to grab "RU-J44U". It only grabs "J44U" and "Gigabyte", not sowing the "RU-" withing webmaster.

Should I be removing the dash and just going "Gigabyte RUJ44U" within my content?