Nested Vlookups?

I was trying to "nest" some vlookup functions so that i could check for a value in multiple worksheets but after writing the code i realized that it returns N/A, when i would have expected it to move to the next vlookup. I understand why it does this (because once its pasted in the cell it doesnt know what the functions are) but i dont know how to correct it. I would prefer to not even past the formula in the cell but that is beyond my ability. Here is the code:

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I have 2 posts and i haven't gotten a response for either. I don't mean to be impatient. I just want to make sure I haven't done anything wrong to cause people to avoid helping me. These are my first posts. If anyone could kindly point me in the right direction I would appreciate the help. Thanks