"Global" hotkeys are already there. The currently selected text is available via %cliptext% and "Copy selected text" (see Preferences > Lists > Hotkeys). You can find an example in the screenshot which is appended.
Hehe, more than one time I caught myself trying to reopen FARR by pressing CTRL+Space (that's my "bring FARR up" combination) with the aim to enter "robot"... d'oh!
Ah, ... I wrote non-sense :D I meant: If the desired option is there one could avoid writing +external / +internal by creating a new alias using dosearch. (Ok, that's obvious...) Forget it :-[ :'(
BTW: Isn't Google blocking people who start too many searches in a short period of time?