Help with using PowerShell to search a directory

[sand0val]

At the school at which I work the only know directory with all student and faculty names and their respective locations on campus is hosted on a website where one can find the required information by using a search field. I would like to find a way to get this site to dump all possible returns for a search, however if one leaves the search empty it returns nothing and if it would return 25 or more results it returns nothing at all. Is there a workaround using powershell to automate the search process/force the search to return all results? Or a much more simple way?

 

thanks for your help.