Doubling the size of the opening failed to solve the problem.

The local police investigation failed to solve the case.

Being wrong and failing to solve it could be the end of a career.

The Clinton administration tried and failed to solve the problem with its sweeping health care initiative in 1993-94.

That was the problem which classical political economy failed to solve.

But he said the system fails to solve larger problems.

Also, he failed to solve police and security issues in the country.

This happened in the replay, and South was left with problems that he failed to solve.

Changes in ventilation systems, including new air filters, were tried, but failed to solve the problem.

If that fails to solve the problem, other "reasonable" steps must be taken.