Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
cong cong » cong dong, trong cong, dung cong
dinh cua » sinh cua, dinh cu, tinh cua
dinh cuu » dinh chi
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van 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) or (chieu sach)) - hinh ((dinh cua) OR (dinh cuu)) cong cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - hinh ((dinh cua) OR (dinh cuu)) cong cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sach)) - hinh ((dinh cua) OR (dinh cuu)) cong cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - hinh ((dinh cua) OR (dinh cuu)) cong cong tac toan ban*.