I used the following query: https://api.fda.gov/device/event.json?search=date_received:[20120101+TO+20141231]+AND+device.device_report_product_code:LLZ+AND+product_problem_flag:Y+AND+event_type:"Death"&limit=1
OpenFDA returned a message "The API response was an error. Bummer. Check the syntax and give it another try."
I then tried to relax the time frame and made the query to be: https://api.fda.gov/device/event.json?search=date_received:[20010101+TO+20141231]+AND+device.device_report_product_code:LLZ+AND+product_problem_flag:Y+AND+event_type:"Death"&limit=1
It returned 1 result.
Could anyone help diagnose whether there is a bug in my query? Thanks!