จนได้

v.p. 1. until (one) obtains (something), succeeds;

2. anyway (in spite of opposition or prohibition).

เธอหัดขับรถจน (ขับ)ได้

She tried until she could drive. ฉันจะพยายามหาเงินมาให้คุณจนได้ I shall try until I succeed in getting money for you.