Vanacker rhymes with:
acker, aker, akre, attacker, backer, bakker, blacker, bracher, bracker, cracker, hacker, lacher, lacquer, macher, makar, packer, racker, sacher, schacher, slacker, stacker, tacker, thacher, thacker, thakkar, tracker, wacker, whacker, zacher
Vanacker sounds like:
vanacore, vancura, vanhooser, vanhoozer, venacuro, vencor, vinciguerra, vinegar, vinocur