Meaning of the Sanskrit Word: yesu

  yeṣu—in which    SB 3.6.27, SB 5.16.15
  yeṣu—unto whom    SB 4.26.21
  yeṣu—in those lower planetary systems    SB 5.24.9
  yeṣu—which    SB 8.16.7

Can't find any compound Sanskrit words containing yesu.