Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
ban cong » bang cong, van cong, phan cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
va ban » van ban, va bai, va bao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (ho chieu)) xanh - ((hanh tranh) or (canh tranh)) va ban cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - ((hanh tranh) OR (canh tranh)) va ban cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) xanh - ((hanh tranh) or (canh tranh)) va ban cong tac toan cao*.