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 cua » truong cua, trung tuan, trung cap
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong san » cong tac
san toan » van toan, dan toan, manh 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: hoc ((((chieu xanh) or (chieu sach))) or (chieu sang)) - thanh trung cua dung cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu xanh) OR (chieu sach))) OR (chieu sang)) - thanh trung cua dung cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu xanh) or (chieu sach))) or (chieu sang)) - thanh trung cua dung cong san toan cau*.