Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hieu tuong » hieu truong, bieu tuong, hien tuong
dieu tuong » dieu duong, bieu tuong, diem tuong
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 sang)) - thanh trung ((hieu tuong) OR (dieu tuong)) cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - thanh trung ((hieu tuong) OR (dieu tuong)) cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sang)) - thanh trung ((hieu tuong) OR (dieu tuong)) cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sang)) - thanh trung ((hieu tuong) OR (dieu tuong)) cong tac toan ban*.