Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh tung » thanh cong
hieu cach » hieu cac, chieu sach, hieu ca
dung cong » dung trong
tung qua » dung qua, tuong quan, trung quan
qua dung » quang dung, su dung, qua song
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu xanh) OR (chieu sang))) OR (hieu cach)) - thanh tung qua dung cong tac toan ban~.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu xanh) or (chieu sang))) or (hieu cach)) - thanh tung qua dung cong tac toan ban*.