Some files which are mostly encrypted with some sort of encrypting File System, that type of files are not probably be cataloged by the windows, and it can’t be searched out by the searching results. Now the method to fix it you needs to follow these steps.
Make Windows 8 Index Encrypted Files
Now move unto the right bottom left hand and open the Settings from the menu.
After opening the system windows, navigate to the Performance tools link and hit it open.
This navigation leads you to the Performance section of the control Panel, open the “Adjust Indexing options”.
After opening the Index Settings, Move on to the next point “Advance Button.”
The windows will alert you with a warning that you are going to be indexing encrypted; the volume of the search box is such that it must have a full volume for such type of encryptions. It’s just a warning alert so not highly recommended. Move on and continue after hitting the button.
Then again hit ok to end your work.