How did you search? I did a search (by clicking on your name Guest, JTT) and found this thread Concertina ValuationI'm guessing you searched on the word concertina. As you may have seen in previous threads, the Supersearch won't work for very recent threads (ie six months). So, the best way to look something up for something within the last few weeks would be to look up a name of someone you know contributed to the thread.
Then find a thread with that person's name and click on that person's name from within the thread. It gives you a list of ALL the threads that name has been posting to.