Could some one please help why this formula is not working

Formula: =IF(ISNUMBER(SEARCH("Pre-Application",B1,)),IF(ISNUMBER(SEARCH("Lighting",B2)),Lists!A35))

What I am trying to do is create a checklist that displays documentation needed based on when a Pre-Application or Final Application is submitted to my job. In addition there are certain measures they can apply for in those applications. So for Example if a Pre-Application with only lighting is applied for, I can pick both of those options. Application Type being it's own dropdown menu located in cell B1. While Measures where lighting can be selected, is a dropdown located in cell B2. The list that populates if both are selected is located in a separate tab named "Lists" and the list starts at A35.

So far the formula listed above only states false even though both Pre-Application and Lighting are selected. I am able to enter separate formulas one for Application Type and one for Measures, but I really need them to be combined so one relies on the other in order to populate.

If anyone could help I would greatly appreciate it!!

Thanks!!