Perhaps you should try some spelling variations:
"su sach ngon y khi đong luc" » "su sach ngan y khi đong luc", "su danh ngon y khi đong luc", "su canh ngon y khi đong luc", "so sach ngon y khi đong luc", "vu sach ngon y khi đong luc", "su sach ngon _ khi đong luc", "su sach ngon ly khi đong luc", "su sach ngon my khi đong luc", "su sach ngon y chi đong luc"
"su cac nganh ky khi đong luc" » "su hoc nganh ky khi đong luc", "su cac nganh y khi đong luc", "su cac nganh xay khi đong luc", "su cac hanh ky khi đong luc", "tu cac nganh ky khi đong luc", "su cao nganh ky khi đong luc", "su can nganh ky khi đong luc", "su cac nganh ky thi đong luc", "su cac nganh ly khi đong luc", "su cac nganh kly khi đong luc", "su cac nganh kmy khi đong luc", "su cac nganh ky chi đong luc"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("su sach ngon y khi đong luc") or ("su cac nganh ky khi đong luc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("su sach ngon y khi đong luc") OR ("su cac nganh ky khi đong luc"))*.
• Removing quotes may allow a broader search: (( su sach ngon y khi đong luc ) or ( su cac nganh ky khi đong luc ))*.