Perhaps you should try some spelling variations:
trinh nhiet » trinh thiet, trinh nghien, trinh viet
nhiet cua » nghiep cua, nhat cua, hieu cua
cho nguoi » cua nguoi
tien huan » hien huan, tien duan, tieu chuan
hinh hoc » tin hoc, benh hoc
cua dan » cua dang, cua ban, ca dan
dan cho » danh cho, san cho, dac cho

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh nhiet cua dan cho nguoi viet ((sinh hoc) OR (hinh hoc)) tien huan~.
• Adding a wildcard symbol may retrieve word variants: giao trinh nhiet cua dan cho nguoi viet ((sinh hoc) or (hinh hoc)) tien huan*.