Perhaps you should try some spelling variations:
"so sach tranh xay thuat toan hoc" » "so canh tranh xay thuat toan hoc", "so sach trinh xay thuat toan hoc", "so sach trong xay thuat toan hoc", "so sach manh xay thuat toan hoc", "so sach tranh ky thuat toan hoc", "so sach tranh my thuat toan hoc", "so sach tranh va thuat toan hoc", "so sach tranh xay thuat toan khoa", "so sach tranh xay thuat van hoc", "so sach tranh xay thuat hoa hoc", "so sanh tranh xay thuat toan hoc", "bo sach tranh xay thuat toan hoc", "co sach tranh xay thuat toan hoc", "so sach tranh xaky thuat toan hoc", "so sach tranh xamy thuat toan hoc", "so sach tranh xakxy thuat toan hoc"
"so sach nganh y thuat toan hoc" » "so sach ngan y thuat toan hoc", "so cac nganh y thuat toan hoc", "so sach danh y thuat toan hoc", "so sach nganh y thuat toan khoa", "so sach nganh y thuat van hoc", "so sach nganh y thuat hoa hoc", "so sanh nganh y thuat toan hoc", "bo sach nganh y thuat toan hoc", "co sach nganh y thuat toan hoc", "so sach nganh ky thuat toan hoc", "so sach nganh my thuat toan hoc", "so sach nganh kxy thuat toan hoc"

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: (("so sach nganh y thuat toan hoc") OR ("so sach tranh xay thuat toan hoc"))~.
• Removing quotes may allow a broader search: (( so sach nganh y thuat toan hoc ) or ( so sach tranh xay thuat toan hoc ))~.
• Adding a wildcard symbol may retrieve word variants: (("so sach nganh y thuat toan hoc") or ("so sach tranh xay thuat toan hoc"))*.