As it is, you cannot search the audit records and the filter only applies to one page. Let's say you need to find a sample and you know which date it was altered but there are 739 pages of audit log for that date - without a search or filter function you need to browse through all of them until you find a match.
While this is not yet implemented in the user interface, searching audit records has been implemented in the v2 REST API released in FreezerPro 8.
Same idea as in FP-I-15. Please, join votes.