Since the search results give the size and date of latest modification (at the time of the indexing), I suppose the results can be sorted by size and date. So it's a request to add those options for advanced searches, below Search by namespaces:
relevance (the default) . size . date of latest modification
Both would be helpful in particular for certain maintenance tasks, sorting by size for stubs and short pages, and sorting by date of latest modification to detect pages not edited for a long time for example.