Improve Google Search Efficiency for Camera System Contacts | Clay Database Problem Solution

Hi team! I need some help. I have a database of contacts, and I want to keep only whose title or job function is related to managing, administrating, or using a camera system. I built this table where:

However, it is not having good results. Is there any different approach I should give to solve this problem, or possibly improve the promts? Thank you very much in advance!