Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
mang luan » tang luan, bang luan, mong luan
hang luan » tang luan, dung luan
ung cong » dung cong, luong cong, duong cong
cong tac » cong ty
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 ((mang luan) OR (hang luan)) ung cong tac ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu trinh - hanh ((mang luan) OR (hang luan)) ung cong tac ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu trinh - hanh ((mang luan) OR (hang luan)) ung cong tac ((toan cao) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo tieu trinh - hanh ((mang luan) OR (hang luan)) ung cong tac ((toan cao) or (toan tap))*.