When researching a new document review platform, check to see if it will allow you to perform quorum searching. Quorum searching involves searching for documents which contain at least a given number of the terms in a list you define. For example, the Sphinx (SQL Phrase Index) a search engine used for SQL databases uses quorum searches which are structured this way:
"default agreement bond equity derivative option instrument" /3
This will find any document that includes any 3 of these words. So if a document contains:
bond option derivative instrument OR
default instrument equity OR
agreement bond derivative
. . . it will come up in the search results, but it will not be found if it contains any number of occurrences of bond AND derivative, or agreement AND bond, and so on.