Perhaps you should try some spelling variations:
trinh hieu » trinh dieu, trinh thiet, trinh nhiet
hieu luan » hieu luat, hieu quan, tieu luan
luan danh » luan thanh, luan van, luan nang
cho nguoi » cua nguoi
tien duan » tien dua, tien huan, tien quang
nm hoc » n1 hoc, n3 hoc
am hoc » ad 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 hieu luan danh cho nguoi viet ((nm hoc) OR (am hoc)) tien duan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "giao trinh hieu luan danh cho nguoi viet ((nm hoc) OR (am hoc)) tien duan".
• Adding a wildcard symbol may retrieve word variants: giao trinh hieu luan danh cho nguoi viet ((nm hoc) OR (am hoc)) tien duan*.