Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
ho chieu » theo chieu, hoc thieu, doi chieu
cap cong » cac cong, cao cong, tap cong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan dau » phan tu, hang dau

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 - thanh tung ((cap cong) OR (tap co)) ((cong dan) OR (cong san)) phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh tung ((cap cong) or (tap co)) ((cong dan) OR (cong san)) phan dau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung ((cap cong) or (tap co)) ((cong dan) OR (cong san)) phan dau*.