You want that your candidate has experiences in a certain industry? Then you should type in the industries you are looking for. The search will first select candidates who are working in those industries and will then add those candidates from other industries who match the job criteria.
After that you are still able to look only at the candidates in your selected industries by selecting a Filter. Click on the button "Show Filters" and choose those industries your candidate must have work experience in by clicking on "Industry":
The filter "Industry" will only show those industries where the system found candidates based on your previous entered job criteria.