can not get my individuals from my ontology using search method in owlready python

I have an ontology : I want to get all lessons for specific class called CS-Java I have tried to use owlready search method and add to it filtration with lesson name and object properties but always give 0 while it should retrieve about 19 item This is my individual this is the class and it is contain list of lesson individuals”*”) it brings all lessons in all courses and when I used”CS-Java”) it return 0 while I need it to return only lessons in this course Answer I guess your search returns 0 result because the