Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tac toan » tap toan, tam toan, hach toan
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: ho chieu xanh - hanh trinh cua ((trong cong) or (dung cong)) tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh trinh cua ((trong cong) OR (dung cong)) tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh trinh cua ((trong cong) or (dung cong)) tac toan tap*.