If you can't find the result you're looking for, try adding a * as a wildcard.
E.g. search for "dav*" to match both "David" and "Dave".
Or try using the "Common Name" field instead of "Given Name", though it will require wrapping the search term
in wildcards as described above. "Common Name" is a field on the user,
which sometimes has values inconsistent with the user's "Given Name" and "Surname" fields.
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