We report results of a study of the ${B}_{s}^{0}$ oscillation frequency using a large sample of ${B}_{s}^{0}$ semileptonic decays corresponding to approximately $1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collide...