Displaying results based on Combo box value EXCEL 2010

I have a problem with using a combo box in Excel 2010.
I have created two combo box. One of them is displaying a list of location while another one is displaying a list of occupation.
I need to display results from an employee table when user selects both of the options from the combo box.
How do I do that? I can't read the value stored inside combo box.
Thanks !