Search facility should be able to search on "COMPONENT" or "VERSION" and search "COMMENTS" and "CHANGE HISTORY"

The search mechanism could be improved greatly by adding these features. We have alot of projects with common "COMPONENTS" and "VERSIONS" and need to be able to include these in 1 search.
Also we have found when you MOVE a task from one project to another the only history you get (like previous task #) is contained in the "CHANGE HISTORY" This (and COMMENTS) cannot be searched