Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
khong cong » thong cong, khong cang, chong cong
trinh cua » tinh cua, trinh quan, trinh luan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh ((trinh cua) OR (trinh luat)) khong cong tac toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh ((trinh cua) OR (trinh luat)) khong cong tac toan cau*.