No, app descriptions are not searchable anymore. Instead you have to insert max 100 characters of keywords and that, and the app title and a few other small things are what are searched. Thats what you would of done quite a while ago when they searched the entire app description. It's half the reason why you see spam apps in the first place. Would you call lonely planet doing the same as spam apps or not, not taking in consideration they do the same with their books?