It sounds like you are asking about payables checks, if that is not the case, please let me know.
There is a setting on the Payables Management Setup window to 'Print Previously Applied Documents on Remittance'. If you have this selected, by default GP will print any credit transactions applied since the last check for the vendor on the new check stub. This does not mean that the credit transactions are in any way tied to the check and once the check is printed, the information about what was printed on the check stub is not stored and cannot be reprinted or looked up, at least in GP 2010 and earlier.
In GP 2013 a new feature was added to reprint a payables check stub/remittance and show not only what invoices were paid, but also what credits were applied and shown on the original check stub. I have not played with this yet, but I suspect this is what you're looking for.