Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tong cong » trong cong, cong cong, dung cong
mang cua » dung cua, ban cua, cong cua
manh cua » doanh cua, ban cua
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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)) - hanh ((mang cua) or (manh cua)) tong cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu sach)) - hanh ((mang cua) OR (manh cua)) tong cong san than cau.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sach)) - hanh ((mang cua) or (manh cua)) tong cong san than cau*.