Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
ho chieu » hoc thieu, doi chieu, mot chieu
van nang » van quang, van ban, van dong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
va nang » da nang, cam nang, kha nang

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) or (theo chieu)) xanh - hanh tinh ((va nang) OR (van nang)) cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - hanh tinh ((va nang) OR (van nang)) cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) xanh - hanh tinh ((va nang) OR (van nang)) cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) xanh - hanh tinh ((va nang) OR (van nang)) cong tac toan ban*.