Multiple URL aliases for same node
Disable the Global Redirect module.  This module is specifically built to do the behavior you are describing, because search engines like it.

Unless you are using those path segments as contextual filters somewhere, there should be no reason to do this.  If you are using those path segments as contextual filters, there should be a better way to do this.  Either a view page or a panel page would be able to hold that page open, use wildcards for those address segments, and get the functionality that you want without having to upset the search engine bots.