If you went through a foreclosure with the lender, my guess is that it is very tough if not near impossible.
They give you several chances to come current before they foreclose, so after foreclosure the loan is gone, the deed is changed, and they might not be willing to sell it back.
Foreclosure for failure to pay taxes is different. There is a redemption period. You would need to check with the county clerk...pay the back taxes and significant interest during the redemption period.
Lynn911 Dallas Realtor & Consultant, Loan Officer, Credit Repair Advisor
The Michael Group - Dallas Business Journal Top Ranked Realtors