title: In StackDriver logging viewer is there a way to query for entries that DO NOT contain a specific string
body: <p>My question is wrt to the log viewer at <a href="https://console.cloud.google.com/logs/viewer" rel="nofollow noreferrer">https://console.cloud.google.com/logs/viewer</a> All the examples <a href="https://cloud.google.com/logging/docs/view/logs_viewer_v2?hl=en_US&amp;_ga=2.101694786.-259888181.1479444123#searching_and_filtering_logs" rel="nofollow noreferrer">here</a> show how to search for existence of text but not for absence. </p>
  
  <p>I want to use this functionality to search for errors that do not contain "Request was aborted after waiting too long to attempt to service your request."</p>