Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tinh bang » tinh sang, tinh lang, tinh quang
tong cong » trong cong, cong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap
toan ban » van ban
bang va » hang va, ban va, trang va
va tong » va thong, va tuong, va trong

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - tinh bang va tong cong tan ((than cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - tinh bang va tong cong tan ((than cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - tinh bang va tong cong tan ((than cau) or (toan ban))*.