Meaning of the Sanskrit Word: adrstva

  adrstva—having not seen    SB 6.5.6-8
  adrstva—without seeing    SB 6.5.11
  adrstva—not seeing    SB 6.5.12
  adrstva—not finding    SB 10.3.41
  adrstva—not seeing there within the forest    SB 10.13.16
  adrstva—not seeing at all    SB 10.13.17

Can't find any compound Sanskrit words containing adrstva.