if theres chance you may be misunderstood or of it matters if you are just say 'Thursday after next' or 'Thursday week' or 'Thursday next week' etc
That's good advice. This Thursday is always the very next thursday to happen, but next thursday could be ambiguous. "Thursday week" is a good idiomatic way to say the next thursday but one. (Well, its idiomatic in British English, I don't know about other sorts)