Here are three options:
1. Improve the hub. Edit it. Resolve any grammatical or writing issues; add more photos, make it better and more interesting. Change the title to use keywords people are likely to Google. (Don't worry about changing the URL, you can't and it doesn't matter.)
2. If you don't care too much about earnings, change your settings to display idle hubs, and Hubpages readers will find it, even though Google will not show it.
3. Create two accounts. Put active (not idle) hubs on one account for earnings. Put hubs that go idle or are not for money-making on another account, and allow that account to show all hubs, including idle ones.