Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trinh » canh tranh, hanh trinh, canh tinh
tieu danh » dieu danh, tiep danh, thien danh
dung cong » dung trong
trinh ve » trinh he, trinh va, trinh vi
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu
ve dung » ve duong, ve rung, va dung

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: theo ((chieu xanh) OR (tieu danh)) - canh trinh ve dung cong san phan cau~.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (tieu danh)) - canh trinh ve dung cong san phan cau*.