In the GPO Search Settings module, under the User Rights Assignment category, trying to search part or the entire settings name doesn't provide any results.
A defect has been identified in the GPO Search for User Right Assignments where results will be returned only if the searched text appears in all the User Right Assignments in all selected GPOs.
WORKAROUND:
None
STATUS
Defect ID - 530143 has been created to consider including a fix in a future release of the product.