Hello,
The Smart Search uses order by ##SCORE## as default, even if no filter is set. Try testing it with a different rule, for example "documentcreatedwhen;;Creation date", to see if you get a different order of results.
To use multiple sort options, simply put a column between the two. For example:
documentcreatedwhen;;Date (Default)
##SCORE##;;Score
##SCORE##,documentcreatedwhen;;Score & Date
Hope this helps.
Regards,
Josef Dvorak