Without a solid connection you can still show digital photos to friends or retrieve a document you left on your computer.

However, she asks his help in retrieving a document that will be found with the will.

For example, many of us have had the experience of querying a database and not retrieving any documents at all.

However, a controlled vocabulary search may also lead to unsatisfactory recall, in that it will fail to retrieve some documents that are actually relevant to the search question.