Perhaps you should try some spelling variations:
"cong trinh luan van thi cong nhat luong" » "cong trinh quan van thi cong nhat luong", "cong trinh han van thi cong nhat luong", "cong trinh toan van thi cong nhat luong", "cong trinh luan van thi cong chat luong", "cong trinh luan van thi cong nhat thuong", "cong trinh luan van thi cong chat long", "cong trinh luan van thi cong nhan luong", "cong trinh luan van thi cong ha luong", "cong trinh luan van thi cong suat luong", "cong trinh luan van tai cong nhat luong", "cong trinh luan van thien cong nhat luong", "cong trinh luan dan thi cong nhat luong", "cong trinh luan van thu cong nhat luong"
"cong trinh luat va thi cong nhat huong" » "cong trinh luat va thi cong nhat thuong", "cong trinh luat va thi cong chat huong", "cong trinh luat va thi cong chat luong", "cong trinh luat va thi cong nhan huong", "cong trinh luat va thi cong ha huong", "cong trinh luat va thi cong suat huong", "cong trinh luat va tai cong nhat huong", "cong trinh luat va thien cong nhat huong", "cong trinh xuat va thi cong nhat huong", "cong trinh luat ve thi cong nhat huong", "cong trinh suat va thi cong nhat huong", "cong trinh luat vu thi cong nhat huong", "cong trinh luat ha thi cong nhat huong", "cong trinh luat vo thi cong nhat huong"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("cong trinh luan van thi cong nhat luong") or ("cong trinh luat va thi cong nhat huong"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cong trinh luan van thi cong nhat luong") OR ("cong trinh luat va thi cong nhat huong")).
• Removing quotes may allow a broader search: (( cong trinh luan van thi cong nhat luong ) or ( cong trinh luat va thi cong nhat huong )).
• Adding a wildcard symbol may retrieve word variants: (("cong trinh luan van thi cong nhat luong") or ("cong trinh luat va thi cong nhat huong"))*.