Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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 tang cua dung cong tan tran cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) OR (chieu sach)) - hanh tang cua dung cong tan tran cau".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) OR (chieu sach)) - hanh tang cua dung cong tan tran cau*.