It is possible to sort by project and non-project in the Results & Balance report. 

Highlight the report in the Finance report application (FRP) and press enter.

Choose the SubReport  6 = 'VIEW : PROJECTS ( DETAILED BY PRJNO )'

This will list all the transactions registered and sorted by project. 
Transactions registered without a project are found under the ."project <blank>" line. 

More information regarding the Finance report application (FRP) can be found here: Finance Report - (FRP)