Yes it can! One of the protections offered by bankruptcy, the automatic stay, prevents creditors who you owe money to from harassing you or garnishing your wages. Once creditors are notified you have filed for bankruptcy all garnishments must be terminated. In addition, you may be able to reclaim some of the money that creditors have garnished from you. In order to do so, you need to have had at least $600 garnished from your wages within the 90 days directly before your case. If you are considering filing for bankruptcy because your wages are being garnished but you have not yet had $600 garnished within the past 90 days it will be to your advantage to wait until you have had that $600 garnished so that you can reclaim those garnished wages.
If you have any additional concerns about your wages being garnished it would be to your advantage to set up a consultation with a local bankruptcy attorney in order to clarify any questions you may have.