The new website's search facility is of little practical use

The Institute and Faculty of Actuaries has recently upgraded its website, with a new look.

Unfortunately, the search facility is far worse than it was before.  For example, if you search for "member pledge"  you currently get this result:

We couldn't find a match for "member pledge". Please try another search.

So for practical purposes the signposted search facility within the IFoA's new website is of little use: you will miss relevant documents, or worse (as we saw with the member pledge) think that no relevant documents exist.

Two ways to still have a good search experience on the site

The first is that you can (for the moment, unless they remove it) still go to their old site search facility at https://www.actuaries.org.uk/search/site and enter in your search term there.  

E.g. entering member pledge is equivalent to going to https://www.actuaries.org.uk/search/site/member%2520pledge and that brings up lots of results, including the Member Pledge page, and on the right hand side some options to filter the results down further.

The second is a standard way to use Google to search within a site.  In Google's search bar, just prefix your search term by site:urlofthesite, e.g. here site:actuaries.org.uk

So a search for member pledge is 

site:actuaries.org.uk member pledge

which is equivalent to https://www.google.com/search?q=site%3Aactuaries.org.uk+member+pledge&oq=site%3Aactuaries.org.uk+member+pledge

which brings up lots of pages: