Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua nhung » va nhung
tung cua » trung cua, tuong cua, dung cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan 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 ((((hieu lang) OR (hieu manh))) OR (chieu sach)) - thanh tung cua nhung cong tac toan tap~.
• Adding a wildcard symbol may retrieve word variants: ho ((((hieu lang) or (hieu manh))) or (chieu sach)) - thanh tung cua nhung cong tac toan tap*.