Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tang » anh tang, hanh mang, hanh tung
tong cong » trong cong, cong cong, dung cong
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu sach)) - ((hanh tang) OR (hanh trang)) cua tong cong tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (chieu sach)) - ((hanh tang) OR (hanh trang)) cua tong cong tan toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sach)) - ((hanh tang) OR (hanh trang)) cua tong cong tan toan cau*.