Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
duong cong » dung cong, luong cong, duong trong
hanh tang » hanh trang, anh tang, hanh mang
cua duong » cua dong, cua huong, qua duong
chu manh » ho manh, chu han, chu van
tang cua » mang cua, hang cua, tang luan
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 ((chieu sach) or (chu manh)) - hanh tang cua duong cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chu manh)) - hanh tang cua duong cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chu manh)) - hanh tang cua duong cong dan toan cau*.