Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
manh tran » manh toan, manh tuan, canh tranh
tran tuan » tran xuan, tran quang, tran thanh
tuan van » luan van, tran van, tan van
van cong » van dong, van phong, phan cong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan 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 ((hieu manh) or (chieu sach)) - manh tran tuan van cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu sach)) - manh tran tuan van cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sach)) - manh tran tuan van cong san toan tap*.