Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tang » hanh trang, anh tang, hanh mang
chua xang » chua nang, chuc nang, chu bang
chi sach » chinh sach, co sach, moi sach
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 ((chi sach) or (chieu sach)) - hanh tang ((cua ban) or (chua xang)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi sach) OR (chieu sach)) - hanh tang ((cua ban) OR (chua xang)) cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chi sach) or (chieu sach)) - hanh tang ((cua ban) or (chua xang)) cong dan toan cau*.