You’re overcomplicating this in some way. I was trying to ask relatively simple questions to guide you.
Say the inputs you want to be true are x=1, y=0 and you want an expression that is only true for those inputs.
Then the expression you need is: x & !y
That’s an example of how to answer this:
So how do you create an expression that is true if and only if one specific set of inputs is provided?
It doesn’t explain the general method.
Does that make sense and do you see why that expression would be true if and only if the specific inputs are provided?