How do you rid of bills that are not allowed in bankruptcy and rebuild credit?

Can you answer alrightythen4u’s question about Credit Repair?:

We filed chapter 7 and were not able to include student loan, back taxes, and back child support. We almost have the taxes paid and are working on child support. It is being taken out each check in addition to child support being paid. Does anyone have any recommendations on how to start rebuilding credit other than financing a car at a high interest rate?

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