Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, hien hanh
hanh hang » thanh hang, hang hang, hanh han
hang cong » dang cong, hang nong, bang cong
hang cua » mang cua, hang ca, huong cua
cua hang » cua dang, cua nhung, cua cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » 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 ((((hieu manh) OR (dieu hanh))) or (chieu sach)) - hanh hang cua hang cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((hieu manh) OR (dieu hanh))) OR (chieu sach)) - hanh hang cua hang cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((((hieu manh) OR (dieu hanh))) or (chieu sach)) - hanh hang cua hang cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((((hieu manh) OR (dieu hanh))) or (chieu sach)) - hanh hang cua hang cong dan toan cau*.