The search feature on the right-hand side above the categories list only searches words listed in the posts (meeting materials and approved minutes). If you would like to search the categories list easily, click on ctrl and the F key simultaneously. A box will appear in the upper right-hand corner. You can then search for a word or phrase.
The categories are linked to every set of minutes/meeting materials where that topic was addressed. Once you click on a category item, the page will refresh, and all of the minutes/materials where that topic is addressed will appear.