You can increase the selection by merely selecting a broader filter entry in the suggested filter list, as mentioned in the documentation (https://github.com/gorhill/uBlock/wiki/Element-picker):

> If possible, one or more network filters will be suggested, as well as a list of cosmetic filters. The top most cosmetic filter is the most specific which could be derived from the element you clicked. The bottom-most is the broadest, the least specific. Pick the one which matches best what you wish to accomplish

For demonstration of this, see https://www.youtube.com/watch?v=8TvCGWwQr5o