Perhaps you should try some spelling variations:
"te sach duoc lam nguoi" » "te sach nuoc lam nguoi", "te sach dao lam nguoi", "te sach dung lam nguoi", "te sach duoc tay nguoi", "te sach duoc pham nguoi", "te sach duoc ly nguoi", "te sach duoc li nguoi", "toc sach duoc lam nguoi"
"te mach hoc lam nguoi" » "te mach hoc tay nguoi", "te cach hoc lam nguoi", "te dich hoc lam nguoi", "te anh hoc lam nguoi", "ke mach hoc lam nguoi", "tim mach hoc lam nguoi", "tao mach hoc lam nguoi"
"te mach hoc dao nguoi" » "te mach hoc cho nguoi", "te cach hoc dao nguoi", "te dich hoc dao nguoi", "te anh hoc dao nguoi", "ke mach hoc dao nguoi", "tim mach hoc dao nguoi", "tao mach hoc dao nguoi", "te mach hoc dan nguoi", "te mach hoc cao nguoi", "te mach hoc dai nguoi"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("te sach duoc lam nguoi") or ((("te mach hoc lam nguoi") OR ("te mach hoc dao nguoi"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("te sach duoc lam nguoi") OR ((("te mach hoc lam nguoi") OR ("te mach hoc dao nguoi")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"te sach duoc lam nguoi\") or (((\"te mach hoc lam nguoi\") OR (\"te mach hoc dao nguoi\"))))".
• Removing quotes may allow a broader search: (( te sach duoc lam nguoi ) or ((( te mach hoc lam nguoi ) OR ( te mach hoc dao nguoi )))).
• Adding a wildcard symbol may retrieve word variants: (("te sach duoc lam nguoi") or ((("te mach hoc lam nguoi") OR ("te mach hoc dao nguoi"))))*.