Perhaps you should try some spelling variations:
trinh thiet » trinh viet, trinh thi
vien nganh » vien thanh
thiet qua » thien quan, hieu qua, thien quy
vien than » vien thanh, dien than, vien nhan
qua danh » qua dan, luan danh, luat danh
danh cua » doanh cua, manh cua, dinh cua
vien cac » vien bach, vien dai, vien da
viet ha » viet nam
ha hoc » hoa hoc, nha hoc, va 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 thiet qua danh cua nguoi viet ha hoc ((vien cac) or (((vien than) or (vien nganh))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh thiet qua danh cua nguoi viet ha hoc ((vien cac) OR (((vien than) OR (vien nganh)))).
• Adding a wildcard symbol may retrieve word variants: giao trinh thiet qua danh cua nguoi viet ha hoc ((vien cac) or (((vien than) or (vien nganh))))*.