How to search in this wiki
From Physiki
In addition to browsing through hierarchies of categories, it is possible to use the search tool to find specific articles in specific categories. To search for articles in a specific category, type incategory:"CategoryName" in the search box.
An "OR" can be added to join the contents of one category with the contents of another. For example, enter
incategory:"Suspension bridges" OR incategory:"Bridges in New York City"
to return all pages that belong to either (or both) of the categories, as here.
Note that using search to find categories will not find articles which have been categorized using templates. This feature also doesn't return pages in subcategories.