Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh thuc
nhung tuong » nhung huong, nhung phuong, hung vuong
chieu xanh » chieu sach, chieu sang, chieu tinh
tuong lanh » thong lanh, tuong linh, thuong lang
lanh luan » lanh xuan, doanh luan, tranh luan
ho chieu » theo chieu, hoc thieu, doi chieu
trinh tu » trinh ky, trinh do
luan han » luan hoan, luan phan, luan van

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((trinh thuat) OR (trinh tu)) nhung tuong lanh luan han~.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((trinh thuat) or (trinh tu)) nhung tuong lanh luan han*.