Nope, because that wouldn't work with stemming and pluralizing.

Think finding "weisswürste" when people search for wurst. Unless you correctly build a tvector of (weiss, wurst) from "weisswürste", even with wildcarding hacks, you'd have to search for "würste" to find it.

Also: Not all words are compoundable. Doing a blind wildcard search would lead to false-positives which is somewhere between annoying and very annoying for the user.