I'm not exactly clear on what you're asking. Have you applied the voice removal effect and it took away all of the sound? Do the clips you can't hear audio from in PD play in external apps? Have you muted any of them, disabled the audio on any tracks or applied any speed changes or audio effects to those clips on the timeline?
A screenshot of your timeline showing the affected clips would be helpful. Save it as a JPG or PNG then use the Attachments button below the forum text box to share it here.