Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhanh hanh » nhanh thanh, nhanh thang, thanh thanh
cong vang » cong lang, cong quang, cong ngang
chinh cau » chinh chau, chinh ca, chinh can
cong van » cong san, song van, cong tan
hanh va » hang va, hanh vi
va dung » van dung, va duong, vat dung
tinh » trinh, dinh, minh

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((trieu tinh) OR (chieu sach)) - nhanh hanh va dung ((cong van) OR (cong vang)) chinh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((trieu tinh) or (chieu sach)) - nhanh hanh va dung ((cong van) OR (cong vang)) chinh cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((trieu tinh) or (chieu sach)) - nhanh hanh va dung ((cong van) OR (cong vang)) chinh cau*.