omission of article with demonstrative pronoun

I have this example from Stephanus: οἶον τὸ δύνασθαι τάδε στοιχεῖα
συντάττεσθαι καὶ ἐκφωνεῖσθαι ἢ μή: as, for instance, whether [particular] elements can be combined and pronounced here [i.e. in a word] or not. τάδε στοιχεῖα does not mean these elements but certain elements here because of the omission of the article,