See the problem is that you keep putting files in there. Then removing them. Which overwrites that area on the hard drive. By doing so you remove all chances of recovering your files.
Since you have written to the same spot as the file was, the recycle bin, and since removed the files you have in essance lost all chance of recovering the file. I dont know of any Commercial Software out there that can recover files at that point. Only Gov't apps that can recover files from a destroyed hard drive can help you now.
Sorry.