see under run of luck.
Examples from the Web for bad luck
I never knew ennyboddy yet to git stung by hornets, who kept away from whare they wazit iz jist so with bad-luck.The Complete Works of Josh Billings|Henry W. Shaw
But I told you, Iris, that I meant just the fact of bad-luck, not any particular loss from it.
After all, bad-luck was never more than bad-luck seen in the Book of Job.