I'm afraid you can't do that. There would need to be some way for you to setup what to search for and to map it to a hotkey, but we don't have such a thing.
What you can do is:
1) Press Enter
to focus the tree text search.
2) Type Large
.
3) Press ctrl+Enter
to select all results.
You could then use ctrl+1
to store that selection, then any time you press 1
you'll get that selection.
Also note that page up and page down navigate your selection history, which is super useful when you recently had something selected and need it again.