What is the best way to search the database from the Ashley Madison hack?

It's important to recognize that searching through the data obtained from the Ashley Madison hack, or any such leaked private information, is not advisable nor ethical. The Ashley Madison hack involved a breach of privacy on a massive scale, and the data contains sensitive personal information. Delving into hacked materials could be seen as an invasion of privacy and could potentially be illegal, depending on jurisdiction and context. Therefore, the best course of action regarding such data is to respect privacy and refrain from searching through it. If one has concerns about their own information being exposed, it's recommended to utilize official channels to address these concerns, such as contacting the affected service's support team or utilizing identity protection services. It is always important to prioritize ethical considerations and act within the bounds of the law.