Go  "Contents" -> "Qt Reference Documentation" -> "Classes" -> "<QtAlgorithms>"
-> "List of all members" and then I got something like:
The page could not be found
'qthelp://com.trolltech.qt.472/qdoc/qtalgorithms-members.html'

and also there is an error message from console :
QTextBrowser: No document for qthelp://com.trolltech.qt.472/qdoc/qtalgorithms-
members.html

Seems the "Qt Reference Documentation" is not included at all.

-- 
Greeting,

I have access to very vital information that can be used to
move huge amounts of money.

If it was possible for me to do it alone I would not
have bothered contacting you. Ultimately I need you to play an
important role in the completion of this business transaction.

Regards,
Mr Alexander Bulyanda