What is the institution's name of american students within the number of degree-seeking students in the cohort that ranges from 1 to 3?
institution's name refers to chronname; american refers to race = 'Ai'; number of degree-seeking students in the cohort refers to grad_cohort; grad_cohort < = 3;
SELECT DISTINCT T1.chronname FROM institution_details AS T1 INNER JOIN institution_grads AS T2 ON T2.unitid = T1.unitid WHERE T2.grad_cohort BETWEEN 1 AND 3 AND T2.race = 'Ai'