Perhaps you should try some spelling variations:
trinh thi » trinh tai, dinh thi, trinh tu
luan manh » luan danh, luan anh, luan mach
viet khoa » vien khoa, viec khoa, viet khoang
dien than » dien thanh, dien toan, dien phan
vien than » vien thanh, viet thanh, vien thong
vien nhan » trien nhan, vien nganh, vien thanh
thi luan » thi lan, thi xuan, thi loan
manh cua » doanh cua, ban cua
khoa hoc » hoa 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 thi luan manh cua nguoi viet khoa hoc ((dien than) or (((vien than) or (vien nhan))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh thi luan manh cua nguoi viet khoa hoc ((dien than) OR (((vien than) OR (vien nhan)))).
• Adding a wildcard symbol may retrieve word variants: giao trinh thi luan manh cua nguoi viet khoa hoc ((dien than) or (((vien than) or (vien nhan))))*.