It is the objective of this paper to study further the notion of ${Lambda}_s$-semi-${ heta}$-closed sets which is defined as the intersection of a ${ heta}$-${Lambda}_s$-set and a semi-${ heta}$-closed set. Moreover, introduce some low separation axioms using the above notions. Also we present and study the notions of ${Lambda}_s$-continuous functions, ${Lambda}_s$-compact spaces and ${Lambda}_s$-connected spaces.