Perhaps you should try some spelling variations:
"cong trinh luan van thi cong nhat luong" » "cong trinh luat van thi cong nhat luong", "cong trinh quan van thi cong nhat luong", "cong trinh han van thi cong nhat luong", "cong trinh luan van thi cong chat luong", "cong trinh luan van thi cong nhat huong", "cong trinh luan van thi cong nhat thuong", "cong trinh luan van thi cong ha luong", "cong trinh luan van thi cong suat luong", "cong trinh luan van thi dang nhat 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 luan van thi cong nhan tuong" » "cong trinh luat van thi cong nhan tuong", "cong trinh quan van thi cong nhan tuong", "cong trinh han van thi cong nhan tuong", "cong trinh luan van thi cong nhan trong", "cong trinh luan van thi cong nhan thong", "cong trinh luan van thi cong nhan tong", "cong trinh luan van thi cong thanh tuong", "cong trinh luan van thi cong san tuong", "cong trinh luan van thi dung nhan tuong", "cong trinh luan van tai cong nhan tuong", "cong trinh luan van thien cong nhan tuong", "cong trinh luan dan thi cong nhan tuong", "cong trinh luan van thu cong nhan tuong"

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