These three features of the software are entirely different from one another with respect to functionality. Let us have a closer look at each one of them:
'Deep Scan' is a type of scan that possibly looks through each sector of the storage media to find traces of lost or deleted files. This type of precision scanning always ends up yielding accurate results. Deep Scan usually runs slower than other scans, since scanning involves checking each sector rigorously.
The 'Search File' option provides you a set of parameters based on which you can search for the desired files in your scan results. You can search files by name, signature. The feature is definite advantage for those who need to save time by recovering only some selected files.