Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
chua nang » chuc nang, kha nang, cuu nang
chua xang » chuc nang, chu bang, chua dong
anh tang » anh bang, anh dang, anh nang
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: ho ((chieu sach) or (chieu tinh)) - anh tang ((chua nang) OR (chua xang)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu tinh)) - anh tang ((chua nang) OR (chua xang)) cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu tinh)) - anh tang ((chua nang) OR (chua xang)) cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu tinh)) - anh tang ((chua nang) OR (chua xang)) cong dan toan cau*.