Perhaps you should try some spelling variations:
trinh nhiet » trinh thiet, trinh nghien, trinh viet
nhiet luan » nghiep luan, nhiet cua, nhien xuan
luan danh » luan thanh, luan van, luan nang
cho nguoi » cua nguoi
vien duan » vien quan, vien luan, vien dai
tien duan » tien dua, tien huan, tien quang
nm hoc » am hoc, n3 hoc
n1 hoc » n1 doc, n3 hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: giao trinh nhiet luan danh cho nguoi viet ((nm hoc) OR (n1 hoc)) ((vien duan) or (tien duan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh nhiet luan danh cho nguoi viet ((nm hoc) OR (n1 hoc)) ((vien duan) OR (tien duan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "giao trinh nhiet luan danh cho nguoi viet ((nm hoc) OR (n1 hoc)) ((vien duan) or (tien duan))".
• Adding a wildcard symbol may retrieve word variants: giao trinh nhiet luan danh cho nguoi viet ((nm hoc) OR (n1 hoc)) ((vien duan) or (tien duan))*.