Meaning of the Sanskrit Word: upasrtya

  upasṛtya—having approached nearer    SB 3.5.1
  upasṛtya—approaching    SB 4.12.22
  upasṛtya—reaching up    SB 5.26.33
  upasṛtya—obtaining shelter at    SB 6.15.28

Can't find any compound Sanskrit words containing upasrtya.