Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
sinh trong » sinh truong, sinh trung, chinh trong
dinh trong » chinh trong, dinh thuong, dinh duong
long cong » luong cong, tong cong, long tong
cong cong » cong dong, trong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
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 - ((sinh trong) or (dinh trong)) chan ((long cong) OR (cong cong)) tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((sinh trong) OR (dinh trong)) chan ((long cong) OR (cong cong)) tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((sinh trong) or (dinh trong)) chan ((long cong) OR (cong cong)) tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((sinh trong) or (dinh trong)) chan ((long cong) OR (cong cong)) tac toan cau*.