ChatGPT is not a search engine, it generates predictions on what is the most likely text completion to your prompt. It does not pull information from a database. It is a mathematical model. Its weights do not contain the training data. It is not indexing anything. You will not find any page from the internet in the model. It is all averaged out and any niche detail is lost, overpowered by more prevalent but less relevant training data. This is why it bullshits. When it bullshits it is not because it searched for something and came up empty, it is because in the training data there simply was not a sufficient number of occurrences of the answer to influence its response against the weight of all the other more prevalent training data. ChatGPT does not search anything.