The phrase "such utterances" is used to refer to the specific things that someone says or voices. It implies that the speaker is talking about particular statements or expressions made by someone else. Full definition
Sanders thinks the biblical writers protesteth too much; Jesus likely made such utterances. (religion-online.org)
Perhaps such utterances are not about the death and resurrection of Jesus alone, but about the death and resurrection of hope, for which Jesus is the banner, the icon. (religion-online.org)
Singletons also use invented words, adult intonation patterns and onomatopoeic expressions during language development, but such utterances usually diminish more quickly as they are not reinforced. (multiplesandmore.com)