The doughnut debacle has provoked fiery meetings between the opposing parties and has even drawn in the local legislature, which has attempted unsuccessfully to broker a ceasefire.

I attempted unsuccessfully to catch the phone.

He attempts unsuccessfully to explain to her the concepts of his immortality.

That year, the two teams attempted unsuccessfully to merge with each other.

He continued to refine new mounting techniques, prepared specimens, describing some, and attempted unsuccessfully to obtain funding for an earth sciences museum.