link:URLshows pages that point to that url. You can't combine it with other expressions.
Shows results from a particular location.
of the document.
However the best way to search for documents is using a combination of these parameters...
Happy Googling, folks! Hope Google makes your life easier (just as it has made mine!).
P S- There is no space between the search parameter and search string. Eg 'site: iitr.ernet.in' and '
' are different, the later being correct.