Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
duong cong » dung cong, luong cong, duong trong
hieu manh » hieu nganh, dieu hanh, hien hanh
trinh va » trinh van, trinh vat, trinh ve
va duong » van duong, va tuong, va huong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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 xanh) or (hieu manh))) or (chieu sach)) - canh trinh va duong cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((chieu xanh) OR (hieu manh))) OR (chieu sach)) - canh trinh va duong cong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((((chieu xanh) or (hieu manh))) or (chieu sach)) - canh trinh va duong cong dan toan ban*.