Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, hieu cach
chieu sang » hieu lang, nhieu tang
trung cao » truong cao, trung cap, trung co
dang cong » dung cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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))) or (chieu sang)) - thanh trung cao dang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu xanh) OR (chieu sach))) OR (chieu sang)) - thanh trung cao dang cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((((chieu xanh) OR (chieu sach))) or (chieu sang)) - thanh trung cao dang cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu xanh) OR (chieu sach))) or (chieu sang)) - thanh trung cao dang cong tac toan cau*.