I am using a syntax search to find participles without an article. The following generally works well (although it picks up John 6:12, which surprised me, but I think I can see why):

But if I add the requirement that the article not agree with the participle, then the search fails and returns nothing.

Agreement between the article and participle is inevitable if the article is a specifier with the participle, so I cannot see why this narrowing down of the search should cease to return any results. Does anyone have insight into what is happening?