Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhanh mang » nhanh lang, hanh mang, nhanh quang
thong cong » trong cong, tong cong, thong thong
tinh bang » tinh sang, tinh lang, tinh quang
ho chieu » theo chieu, hoc thieu, doi chieu
anh dong » anh huong, anh son
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: ho chieu sach - ((((anh dong) or (tinh bang))) or (nhanh mang)) he thong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((((anh dong) OR (tinh bang))) OR (nhanh mang)) he thong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((((anh dong) or (tinh bang))) or (nhanh mang)) he thong cong tac toan cau*.