SYMPTOM:
Error message ‘Searching for 'xxx' resulted in no matches.’ is seen when the user attempts to execution following script to create security filter with qualification on attribute form expression via Strategy Analytics Command Manager 9.4.1, as shown below:

CREATE SECURITY FILTER"CategoryBook1"FOLDER"\Project Objects\MD Security Filters\"IN PROJECT"Strategy Tutorial"EXPRESSION "Category@DESC=Books";

CREATE SECURITY FILTER"CategoryBooks"FOLDER"\Project Objects\MD Security Filters\"IN PROJECT"Strategy Tutorial"EXPRESSION "Category@DESC = ( ^"Books^")";