Perhaps you should try some spelling variations:
trinh thiet » trinh viet, trinh thi
thiet luan » thien luan, thi luan, thien quan
luan doanh » luat doanh, luan danh, nhuan doanh
nguoi vien » nguoi viet, nguoi tien, nguoi chien
doanh cua » doanh luan
vien khoa » von khoa, lieu khoa, van khoa
dien phan » dien thanh, bien phap, hien phap
vien than » vien thanh, dien than, vien nhan
khoa hoc » hoa hoc
dien han » dien than, dien dan, dien ban

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 thiet luan doanh cua nguoi vien khoa hoc ((((dien han) OR (dien phan))) or (vien than))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh thiet luan doanh cua nguoi vien khoa hoc ((((dien han) OR (dien phan))) OR (vien than)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "giao trinh thiet luan doanh cua nguoi vien khoa hoc ((((dien han) OR (dien phan))) or (vien than))".
• Adding a wildcard symbol may retrieve word variants: giao trinh thiet luan doanh cua nguoi vien khoa hoc ((((dien han) OR (dien phan))) or (vien than))*.