Perhaps you should try some spelling variations:
vien nganh » vien thanh
trinh thi » trinh tai, dinh thi, trinh tu
dua sinh » cua sinh, dua linh, duc sinh
sinh cua » manh cua, dinh cuu, sinh va
viet nha » viet nhat, viet ha, viec nha
hoc vien » hoc hien, hoc viet, hoc tieng
thi dua » thi dung
nha hoc » nha thuoc, khoa hoc, nha nuoc

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 dua sinh cua nguoi viet nha hoc vien nganh~.
• Adding a wildcard symbol may retrieve word variants: giao trinh thi dua sinh cua nguoi viet nha hoc vien nganh*.