Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh cao » thanh ca, thanh cac, thanh thao
ho chieu » theo chieu, hoc thieu, doi chieu
sinh cua » manh cua, dinh cuu
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
sinh va » sinh vat, tinh va, dinh van

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 chieu sach - hoang ((sinh cua) OR (sinh va)) thong ((cong van) OR (song van)) thanh cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hoang ((sinh cua) or (sinh va)) thong ((cong van) OR (song van)) thanh cao~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hoang ((sinh cua) or (sinh va)) thong ((cong van) OR (song van)) thanh cao*.