Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
trong dang » truong dang, trong dan, trong dong
dang chan » dan chan, dong chan, dang thanh
tung bay » vung bay, tuong ban, vung bao
tung dan » dung dan, huong dan, trung dai
chan cau » phan cau, can cau, chinh cau

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 (chiet tach)) - thanh ((tung bay) OR (tung dan)) dung trong dang chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - thanh ((tung bay) OR (tung dan)) dung trong dang chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chiet tach)) - thanh ((tung bay) OR (tung dan)) dung trong dang chan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chiet tach)) - thanh ((tung bay) OR (tung dan)) dung trong dang chan cau*.