I too struggle (and fail) to keep physical papers organised. But I'm not sure why electronic papers should be any easier? Unless there's some amazing software that can recognise content automatically...
it's probably the most requested feature, but it's a really, really hard problem.
but please send me a message at martin.sandsmark@remarkable.no if anyone have any tips about solutions to this (we're talking with a couple of vendors, but we might have missed some).
Regarding that I do have a 'tip' for you. There is no need for an intermediate textual representation. If a sequence of pen strokes is what you have recorded, then a sequence of pen strokes is what you should search by.
For further tips (or an algorithm) I have to charge :)