Where can I find dwg recovery?

During the work with files there is “A fatal mistake: there isn’t enough memory” also takes off from AutoCAD. What teams or functions should be applied that there passed it an illness? as during the work with these files on other computers a situation same.
AutoCAD do not suggest a dwg recovery software for damaged drawing files with my projects. What third-part tool better for a recovering data from bad .dwg files? DWG recovering are possible?