Possible Clues:

• Stroke, making murmuring sound
• Stroke trophy containing nothing
• Publisher wants opening chapter to be a stunning success
• Ahead after business takeover
• Strategic success
• Grand success
• Brilliant accomplishment
• Firm doing better as result of masterstroke
• Occupation lacks action you'd normally associate with a change of government
• Cough syrup borders on something that synonymous with something revolting