Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dung cong » dung trong
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: doi ((hieu manh) or (chieu sach)) - hanh ((trung cua) OR (trung cap)) dung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (chieu sach)) - hanh ((trung cua) OR (trung cap)) dung cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu manh) or (chieu sach)) - hanh ((trung cua) OR (trung cap)) dung cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu manh) or (chieu sach)) - hanh ((trung cua) OR (trung cap)) dung cong dan toan cau*.