Found no sustenance (ουχ ηυρισκον χορτασματα). Imperfect active, kept on not finding.

Chortasmata is from

chortazo , originally to feed with grass (χορτος) or herbs. Old word, but only here in the N.T. and includes food for both men and animals. In Genesis 24:25; Genesis 24:32 it is fodder for the cattle, a first necessity for owners of herds of cattle.