Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong san » cong tac
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu trinh - hanh tang luan chung cong san ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu trinh - hanh tang luan chung cong san ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo tieu trinh - hanh tang luan chung cong san ((toan cao) or (toan tap))*.