Does Nutch support the boolean OR operator in a search query?

[M S Ram]

Hi,

Does Nutch support the boolean OR operator (or something similar) in a 
search query? I mean is there any class already available to do this? 
The Nutch search interface doesn't seem to have this option.

Expcted functionality: If I ask it to search for (Post Graduate) OR 
(Masters), it should fetch the pages which contain at least one of 
{"Post Graduate", "Masters"}.

Thank you,
Ram.