There isn't a whole lot a user can do, other than to ignore files reported as being unable to scan as the archive is corrupt in the scan results.
They are in your Downloads folder, so presumably you downloaded them some time ago ?
Check how old the file/s is/are, creation date, the older they are the less important and if they are corrupt e.g. the download didn't complete (the .part bit at the end of the vcredist_x86.exe.part file name, then you couldn't install that vcredist_x86.exe update, making it worthless.
You won't be able to find anything after the vcredist_x86.exe.part| as these files >vc_red.cab|>mfc90u.dll.30729.01microsoft_vc90_MFC_x86.SP are inside the vcredist_x86.exe.part file.