Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, truong thanh
chinh cua » chinh ca, chinh sua, chinh luan
ho chieu » theo chieu, hoc thieu, doi chieu
hinh cua » sinh cua, tinh cua, dinh cua
cong tan » cong tac, cong san, cong ty
toan cau » toan cao, toan ban, toan tap

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 - hanh ((hinh cua) OR (chinh cua)) nhung ((cong tan) OR (cong thanh)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((hinh cua) or (chinh cua)) nhung ((cong tan) OR (cong thanh)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((hinh cua) or (chinh cua)) nhung ((cong tan) OR (cong thanh)) toan cau*.