Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tranh » canh tranh, hanh trinh, hanh trang
cua thong » cua thuong, cua khong, suat thong
ho chieu » hoc thieu, doi chieu, mot chieu
cua tong » cua cong, cua dong, cua nong
cong tac » cong ty
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: ((theo chieu) or (ho chieu)) xanh - hanh tranh ((cua thong) or (cua tong)) cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) xanh - hanh tranh ((cua thong) OR (cua tong)) cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) xanh - hanh tranh ((cua thong) or (cua tong)) cong tac toan tap*.