For your info:-
mm43 said:
e.g. 'search term' site : url, but the url needs to be the basic domain name without the http//: or www.
This seemed unlikely to me (google would surely just fix it so that it worked as expected in all three cases) so I tested the effect of prepending "www." and "http : // www." (spaces inserted to try to keep pprune happy as I seem to recall that it does not like URLs in posts) to one of the example searches. All three searches return identical looking results on the first page at least.
If this is off-topic then please feel free to delete it.