The spelling of the word "Thobie" can be explained using the IPA phonetic transcription. The first sound is /θ/ which represents the 'th' sound in English. The following sound is /o/ which represents the 'oh' sound. The third sound is /b/ which represents the 'b' sound, and the last sound is /i/ which represents the 'ee' sound. Therefore, the correct spelling of the word "Thobie" is reflective of the pronunciation and the IPA phonetic transcription can help with correct spelling.