Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh sinh » hanh tinh, hanh dinh, hanh chinh
hinh sinh » tinh sinh, hinh dinh, hinh kinh
cua thong » cua thuong, cua khong, cua tong
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - ((hanh sinh) OR (hinh sinh)) cua thong ((cong ty) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((hanh sinh) OR (hinh sinh)) cua thong ((cong ty) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((hanh sinh) OR (hinh sinh)) cua thong ((cong ty) or (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((hanh sinh) OR (hinh sinh)) cua thong ((cong ty) or (cong san)) toan cao*.