Only use three attempts during a hack, so you leave yourself with one to back 
out. Then, go back to the attempts screen, and you will have four more chances. 
Repeat this as many times as desired. -From: Brett Grimes
If you move your cursor throughout the symbols, sometimes you will highlight a 
group of symbols. Selecting these "duds" will remove one of the words that is 
wrong from your choices. Also, it may grant you an additional attempt if you 
have already gotten a selection wrong. -From: Brett Grimes
Search around both fields, and you will find a string of symbols that you can 
enter as the password. It starts with "(", "<", "[", or "{" and ends with the 
same symbol. This will completely refill your password attempts.