We have decided not to have a universal search bar on our website as we found the results were very hit and miss.
Therefore we have created some comprehensive Site Maps, many with a search bar of its own.
The benefit of this is that you will get good results from the search. Many of the site maps can also be sorted, which can be combined with the search bar to give even more accuracy.
We hope you find this approach works for you. For more info please see the Search or No Search section on our Blog.