Listing related pages to a page is quite easy using the projectdoc Toolbox.
Here is a short example that shows how to automatically link related pages for a new page.
Suppose you have five documents, tagged as shown in the following table.

Four of these documents are related to the topic security. Two of them to security and jaas.
Now the document author creates a new document and tags it with jaas and security.

Related to this documents are all documents that have both tags, jaas and security.
Use the Display Table Macro and add the following where clause.

This query selects all documents where the tag property (left hand side from the equal sign) matches the list of tags of this document (right hand side of the equal sign; the ${...} references the values of referenced property of the document this query is part of).
More information on your query options is found in Search Tips.
The result of the query, executed by the Display Table Macro, is this:

As expected all documents that are tagged with security and jaas are listed. The order in which the tags are actually specified on the single pages do not matter.