I used the website www.wineverygame.com --- i kept discarding tiles until i had the letters "ers", which is a word. i placed them vertically on the board, then type all 10 letters (the 3 on the board and the 7 in your hand) into the website and hope a 9 letter word came up. if not, build small words off the side of the vertical "ers" and keep trying to get it. i got this on the first try using this technique. it also is good if your lucky enough to get a blank tile, which will definetely help.