It seems that a couple of examples (maybe more) don't work. Probably some error caused by jquery updates, who knows 😉

Check here

http://www.trirand.com/blog/jqgrid/jqgrid.html

New in version 3.3 => Multiple toolbar search

the search button is not shown

New in version 3.3 => Multiple Form Search

the search button is shown but clicking it minimizes the grid