I'm not sure, but Google Search in general strips punctuation that isn't specifically designated as a search operator[1], and likely strips control/non-printing characters in a similar manner. Testing it[2] with a few URL-encoded control and invisible characters[3], they seem to be ignored. But they do make it into the query parameter, at least until you edit it for a subsequent search, at which point they get converted into spaces/+ symbols in the query.

[1] https://support.google.com/websearch/answer/2466433?hl=en

[2] https://www.google.com/search?hl=en&q="%0B%08+Foo+%7F"

[3] You can see the full string being searched here, it's 7 characters long: https://r12a.github.io/uniview/?charlist=%08%20Foo%20%7F