Need a student loan, should I keep applying after I have been turned down?

I need a student loan to pay off old debt owed to the university I attend. I have applied twice already for private loans, one turned me down (Chase), and Sallie Mae said I need a co-signor which I do not have. I have no family to ask my mother is a recovring alcoholic and drug user, father a deadbeat and I am the single parent of three already working two jobs and attending cl full time. I have two semesters unitl I graduate. Should I keep applying for loans while having inquires on my credit which I have worked on for the last two years (limiting inquires, and paying down debts) or just apply for loans until someonw helps me. I do not want the inquires to delay me further when trying to buy a home later in the future. What to do??