Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cap » thong cac, trung cap, thong cua
cong cong » cong dong, trong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
tung cap » trung cap, cung cap, trong cap
cong san » cong tac
phan dau » 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) OR (thong cap)) cong cong san ((phan dau) OR (phan tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((tung cap) or (thong cap)) cong cong san ((phan dau) OR (phan tu))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((tung cap) or (thong cap)) cong cong san ((phan dau) OR (phan tu))*.