Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, hieu cach
chieu xanh » chieu tinh, hieu manh
chieu sang » hieu lang, nhieu tang
trung cong » truong cong, trong cong, trung uong
hanh tang » hanh trang, anh tang, hanh mang
cua trung » cua truong, xuan trung, cua nhung
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 sach) or (chieu xanh))) or (chieu sang)) - hanh tang cua trung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((chieu sach) OR (chieu xanh))) OR (chieu sang)) - hanh tang cua trung cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((((chieu sach) or (chieu xanh))) or (chieu sang)) - hanh tang cua trung cong dan toan cao*.