The database is keyword searchable.
From the American Civil Liberties Union:
This tool will be an up-to-date, complete collection of previously secret NSA documents made public since last June. The database is designed to be easily searchable – by title, category, or content – so that the public, researchers, and journalists can readily home in on the information they are looking for.
We have made all of the documents text-searchable to allow users to investigate particular key words or phrases. Alternatively, the filter function allows users to sort based on the type of surveillance involved, the specific legal authorities implicated, the purpose of the surveillance, or the source of the disclosure. For example, you can have the database return all documents that both pertain to “Section 215″ and “Internal NSA/DOJ Legal Analysis.” We will update the database with new documents as they become available to the public.
Direct to ACLU’s NSA Documents Database
Read the Complete ACLU Introductory Blog Post