Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
manh chung » manh hung, lanh chung, doanh chung
thong cong » trong cong, tong cong, thong thong
chung cua » chung cu, dung cua, huong cua
cua thong » cua thuong, cua khong, cua tong
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - manh chung cua thong cong tac toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu tinh)) - manh chung cua thong cong tac toan cau*.