A user interface component receives an input error message. A query enhancer component derives error messages from the input error messages using error pattern(s) representative of the input error message and error sub-pattern(s) of the error pattern(s). A result aggregator component inputs each error message to search engines, receives search results, aggregates the search results, and provides the search results to the user interface. The enhancer component may include a pattern composer component to locate error patterns representative of the input error message, and a sub-pattern generator component to derive error sub-patterns from the error patterns. The aggregator component may determine whether the search results are in agreement with a predetermined criterion. If not, the aggregator component may request the enhancer component to provide additional error messages to input to the search engines. This process can be iteratively repeated until the search results are in agreement with the predetermined criterion.