Lease Option and Land Contract are your possible options.
Lease option is "rent-to-own".
Land Contract is "seller financing", having the seller holding the mortgage instead of the bank.
Both options you deal with the investor, almost everything is negotiable, including terms, interest, down payments... Both options help you improve you credit score over time.
If you know what you want, such the size of the house, # of Bedroom and bathrooms, location or region, price range or monthly payments (including other expenses such as insurance, utilities, upkeep....).
I may be able to help, my assoicates in my Investor group may be able to find the home you want.
Contract me if interested.
Danny W. Der