A possible work around that I have used to put more than one hyperlink in a cell is as follows, but it is slightly painful.
1)Insert a text box into a cell.
2)Edit the shape properties (right click, Format Shape) to “Move but don’t size with cells”
3) right click on text box and hyperlink. This makes the object in the cell a hyperlink.
4) add some text to the text box so you know there is something there.
5) (opt) format the text in the text box to look like a hyperlink (color blue, underline)
Much simpler to live with a single hyperlink.