Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
dung cong » dung trong
trinh va » trinh van, trinh vat, trinh ve
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((((chieu tinh) or (dieu hanh))) or (chieu sach)) - canh trinh va dung cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((chieu tinh) OR (dieu hanh))) OR (chieu sach)) - canh trinh va dung cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((((chieu tinh) or (dieu hanh))) or (chieu sach)) - canh trinh va dung cong san toan ban*.