Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trang luan » tang luan, trang tuan, truong luan
tranh luan » trinh luan, trinh luat, doanh luan
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong dang » cong dong, cong dan, cong dung
dang toan » dang tran, dan toan, dung toan
van cong » van dong, van phong, phan cong
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 ((chieu sach) or (hieu manh)) - hanh ((trang luan) OR (tranh luan)) van cong dang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (hieu manh)) - hanh ((trang luan) OR (tranh luan)) van cong dang toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (hieu manh)) - hanh ((trang luan) OR (tranh luan)) van cong dang toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (hieu manh)) - hanh ((trang luan) OR (tranh luan)) van cong dang toan cau*.