Perhaps you should try some spelling variations:
"hoc sach nganh ky thuat toan hoc" » "hoc sach ngan ky thuat toan hoc", "hoc sach tranh ky thuat toan hoc", "hoc cac nganh ky thuat toan hoc", "hoc sach nganh ky thuat toan khoa", "hoc sach nganh ky thuat van hoc", "hoc sach nganh ky thuat hoa hoc", "hoc sinh nganh ky thuat toan hoc", "hoc anh nganh ky thuat toan hoc", "hoc sach nganh y thuat toan hoc", "hoc sach nganh xay thuat toan hoc", "hoc sach hanh ky thuat toan hoc"
"su canh tranh xay thuat toan hoc" » "su canh trinh xay thuat toan hoc", "su canh trong xay thuat toan hoc", "su canh manh xay thuat toan hoc", "su canh tranh my thuat toan hoc", "su canh tranh va thuat toan hoc", "su canh tranh cac thuat toan hoc", "su canh tranh xay thuat toan khoa", "su canh tranh xay thuat van hoc", "su canh tranh xay thuat hoa hoc", "suc canh tranh xay thuat toan hoc", "su can tranh xay thuat toan hoc", "su anh tranh xay thuat toan hoc"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("su canh tranh xay thuat toan hoc") or ("hoc sach nganh ky thuat toan hoc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("su canh tranh xay thuat toan hoc") OR ("hoc sach nganh ky thuat toan hoc")).
• Removing quotes may allow a broader search: (( su canh tranh xay thuat toan hoc ) or ( hoc sach nganh ky thuat toan hoc )).
• Adding a wildcard symbol may retrieve word variants: (("su canh tranh xay thuat toan hoc") or ("hoc sach nganh ky thuat toan hoc"))*.