In the US, you can file for Chapter 7 bankruptcy again after six years has passed from the date of your last filing. You can file for a Chapter 13 bankruptcy can be filed any time.
In California if you do a Ch.7 you have to wait 7 years, but if you do a 13, which is you pay back so much on the dollar you owe, what we did was after 3 years we were going to modify it (put something in) and then stop one and refile another one. Trustee gives you a letter stating one is dismissed before starting the other one.