Tell us if the transcriptions of the Previous Query and the Current Query query are Broken Voice Queries. For example, if the Previous Query looks like this: [b@@## p@@##], which doesn't make sense as the transcription of a spoken query, or the Previous Query is [how tall is obama] and the Current Query is [he is sixteenth wonder fetal], which is obviously a very poor, nonsensical transcription, you should indicate that these are broken voice search queries.