Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
hieu manh » hieu nganh, dieu hanh, hien hanh
dung cong » dung trong
tung vat » dung vat, tang vat, tung va
vat dung » van dung, va dung, viet 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: ho ((((chieu xanh) or (hieu manh))) or (chieu sach)) - thanh tung vat dung cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu xanh) OR (hieu manh))) OR (chieu sach)) - thanh tung vat dung cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu xanh) or (hieu manh))) or (chieu sach)) - thanh tung vat dung cong san toan cau*.