Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
nang cong » nang song, dang cong, bang cong
ho chieu » hoc thieu, doi chieu, mot chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
tinh va » tich va, trinh van, trinh vat
va nang » van nang, da nang, cam 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 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 cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) xanh - hanh tinh va nang cong tac toan ban*.