Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chiet tach, chieu sang, chieu xanh
canh trinh » canh tranh, hanh trinh, canh tinh
dung cong » dung trong
trinh su » trinh tu, trinh san, trinh cau
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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 tinh) or (((chieu sach) or (chinh sach)))) - canh trinh su dung cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (((chieu sach) OR (chinh sach)))) - canh trinh su dung cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (((chieu sach) or (chinh sach)))) - canh trinh su dung cong san phan cau*.