Try to check (email) with the offices for international students and scholar that in some universities also handle financial issues for foreign students. They will give you the best options. If you're willing to do research or teaching work, I'd suggest you to personally contact Faculties or graduate program secretaries that may have such options for you. In some universities, most national and international grad students are under teaching or research assistantships, have tuition waived and monthly stipend, and this also build up their cv. This may not apply to specific degrees such as MBA, but if you're in science, technology, education or engineer, it is likely that you can find assistantship to support you.
It may be too late to find an assistantship for the fall semester, you can consider to start next spring as well.
good luck!