Salesforce query: Related List in Visual force page

Hello All - Working on visualforce page in salesforce and controller. We have parent object (Authorized Pickup) and child object (Authorized Kid). There is lookup relationship between these 2 objects.

Error: I am getting this error. What am i missing

Didn't understand relationship 'Authorized_Authorized_Pickup__r' in field path. If you are attempting to use a custom relationship, be sure to append the '__r' after the custom relationship name. Please reference your WSDL or the describe call for the appropriate names.
Error is in expression '{!search}' in component <apex:commandButton> in page atp: Class.SearchInVFController.search: line 10, column 1
An unexpected error has occurred. Your development organization has been notified.