Have I lost my chance?

<p>Hi, I'm a high school student in Vietnam and my dream is to study in the USA. I have an IELTS of 7.5 and 1800 SAT. Recently I have earned a 75% tuition in Columbia College. However, 17000 dollars a year is still a great amount of money for my family so my plan is to study in Columbia College for a year or two before retaking the SAT and find other scholarships at other universities. However are there any universities which offer full scholarships for non first time freshmen? I cannot take a gap year so I just have to choose a place to go to study, but a few school I know do not have scholarships for non first time freshmen. Can you help me? Have I lost my chance to study in the US? </p>