Meaning of the Sanskrit Word: tathai

  tathāi—there    Adi 17.8, Madhya 1.241, Madhya 14.105, Madhya 16.142, Antya 1.35, Antya 14.75
  tathāi—there.    Madhya 12.188, Antya 11.73
  tathāi—immediately.    Madhya 1.60
  tathāi—on the spot.    Antya 1.73
  tathāi—there (in Bengal)    Antya 12.81

Can't find any compound Sanskrit words containing tathai.