Part of the problem may be that there were two "Pool of Radiance" CRPGs.
The original one was set in Phlan, on the coast of the Moonsea, and was published about a year, two years before the Curse of the Azure Bonds CRPG.
The Curse of the Azure Bonds pen-and-paper module was then published after the Curse CRPG, and the Ruins of Adventure pen-and-paper module was published AFTER the Curse of the Azure Bonds pen-and-paper module.
For the SSI Gold Box CRPGs, the publish order is Pool of Radiance, Curse of the Azure Bonds, Hillsfar (not quite in the same line but using the same game engine), Secret of the Silver Blades, Pools of Darkness.
There was another "Pool of Radiance" CRPG, set in Myth Drannor, using the 3rd edition rules. It featured a bard ostensibly from Kara-Tur (the oriental setting) narrating the module using medieval european music...