Just enter what you actually want. I've never really had a problem in the 20 years I've been using Thief Bay. I have got some really good bargains if I have have time to put in searches for mis-spellings. I used to collect fire memorabilia, I have got at least 6 fire helmets worth £50 plus each for less than a tenner. I just searched for 'fire hemlet', at least one of those was worth about £250, cost me £15.