I agree 100%. Even looking in Recycle as one thread suggests it won't be there.
Somebody has to get the bugs out of this program for good because there are too many "recover deleted file " utilities out there to bother with this when you can't find that critical file you need.
Are you creating the test files and then deleting them immediately? If so then this is probably the reason you are unable to find them.
Windows is constanly creating new files (mostly temps files). When it creates a new file, it adds the file name to the MFT table and uses the space created by the most recently deleted file. So if you create a file and then immediately delete it, the chance of it being recovered are smaller than if you have waited a few minutes. Effectively, the longer a file has existed, the greater the chance of recovering its name. On the other hand, the longer it has been deleted, the greater the chance it has been over written.