Vlach rhymes with:
flach, lach, lache, latch, latsch, attach, bache, batch, brach, bratsch, catch, detach, dispatch, drach, flach, gach, gatch, hach, hatch, kach, krach, lach, lache, latch, latsch, mache, match, matsch, mismatch, overmatch, patch, rach, reattach, rematch, scratch, snatch, stach, tatsch, thach, thatch, tkach, unattach
Vlach sounds like:
valasek, valek, vales, valeska, valis, valk, valko, vallas, vallejo, vallejos, valles, valley's, valleys, vallez, vallis, valls, valois, valueless, values, values', valukas, veals, veilleux, veils, velasco, velasquez, velazco, velazquez, velez, velika, veliz, vellucci, veloso, veloz, vials, vilas, viles, villa's, village, village's, villages, villas, ville's, villegas, villwock, violas, vlachos, vlahakis, vlahos, vlasak, vlasic, vlcek, vlok, voelz, voiles, voles, volga, volk, volleys, volokh, volz, vowels, vowles, voyles