Perhaps you should try some spelling variations:
trinh hien » trinh thien, trinh dien, trinh bien
hien luat » hieu luat, hieu suat
viet khoa » vien khoa, viec khoa, viet khoang
vien nhan » vien than, trien nhan, vien nganh
luat van » luan van, luat dan, luat va
khoa hoc » hoa hoc
dien han » dien phan, dien than, dien dan
vien dai » hien dai
van cua » vang cua, ban cua, dan cua

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 hien luat van cua nguoi viet khoa hoc ((((dien han) or (vien dai))) or (vien nhan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh hien luat van cua nguoi viet khoa hoc ((((dien han) OR (vien dai))) OR (vien nhan)).
• Adding a wildcard symbol may retrieve word variants: giao trinh hien luat van cua nguoi viet khoa hoc ((((dien han) or (vien dai))) or (vien nhan))*.