By Andrew Gould The Dallas Cowboys will look to recover from a Week 15 thrashing when playing the Miami Dolphins this Sunday. They’ll hope to have a few key players missing from Wednesday’s practice. Per The Athletic’s Jon Machota, Zack Martin, Tyron Smith, DeMarcus Lawrence, Johnathan Hankins, and Malik Hooker weren’t spotted on their practice field in Frisco. Martin left Sunday’s 31-10 loss to the Buffalo Bills early with a quad contusion. The eight-time Pro Bowl guard is aiming to play this weekend. “A fluke thing, I guess. … I’m hoping, this week, to treat it and get it ready to go on Sund…