You can absolutely file for bankruptcy more than once, though your previous case may determine how long you must wait before doing so again. You need to wait eight years between filing chapter 7 cases and six years to file chapter 7 if you previously filed chapter 13. However, you may file multiple chapter 13s, even back-to-back, although you may not be eligible for a discharge in subsequent filings, and so long as you re-file for justifiable reasons.