SZÖVEG.KERES2

Returns the starting position of a given text, using byte positions (not case sensitive).

SEARCHB(Find Text; Text [; Position])

Find Text: The text or text expression to be found.

Text: the text in which the search is to be made.

Position: The position in the text where the search starts.

=SEARCHB("ᄫᄬ";"ᄩᄔᄕᄜᄝᄞᄠgᄢᄣᄫᄬᄭᄮᄯᄲᄶ";17) returns 20.