Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
van chinh » va chinh, lan chinh, van thinh
chinh cau » chinh chau, chinh ca, chinh can
cong van » cong vang, cong san, song van
hanh va » hang va
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) OR (hanh vi)) dung cong van chinh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((trieu tinh) or (chieu sach)) - nhanh ((hanh va) OR (hanh vi)) dung cong van chinh cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((trieu tinh) or (chieu sach)) - nhanh ((hanh va) OR (hanh vi)) dung cong van chinh cau*.