I dont really understand your environment and problem. If the information/data is stored in a Database, you can use expressions in the select queries to get a QBE result, for example:
SELECT * FROM Documents WHERE title LIKE "%.NET%"
Or when it is stored in Html documents for example you can use Xpath expressions to search trought documents and when it is plain text you can use Regex. There are so much options, but I there is no out-of-the-box solution like in ColdFusion for example that offers a full Verity Collections. But even there you need to generate your own expressions.