Graduate assistantships (teaching, research, and administrative) are known as GTFs at the University of Oregon. GTFs receive a monthly salary, tuition remission, fee subsidy, and health insurance. For details, see the GTF section of this website.
Use the internet to search for additional funding. Consider keyword searches based on your research topic or professional association/organizations relative your field. Often foundations like the Rotary Foundation or the Woodrow Wilson National Fellowship Foundation are a good place to look for grants and funding opportunities. The following is a list of searchable databases and/or local resources: