Until the search function works, a simple Google search will probably give you what you need.

In the Google search bar, simply type:

<keywords> site:vbforums.com

For example, if I wanted to find the Olympics thread I started, I might type something like

Olympics moonman239 site:vbforums.com

or

2012 London Olympics site:vbforums.com

into the search bar.

I'll create a small code snippet to be used in place of the built-in forum search.