Perhaps you should try some spelling variations:
"cong trinh luan van thu cong nhan thuong" » "cong trinh luan van thu cong phan thuong", "cong trinh luan van thu cong han thuong", "cong trinh luan van thu cong chan thuong", "cong trinh luat van thu cong nhan thuong", "cong trinh quan van thu cong nhan thuong", "cong trinh han van thu cong nhan thuong", "cong trinh luan van thu cong thanh thuong", "cong trinh luan van thu cong san thuong", "cong trinh luan van thu dung nhan thuong"
"cong trinh luan van thu cong nhat luong" » "cong trinh luat van thu cong nhat luong", "cong trinh quan van thu cong nhat luong", "cong trinh han van thu cong nhat luong", "cong trinh luan van thu cong chat luong", "cong trinh luan van thu cong nhat huong", "cong trinh luan van thu cong nhat thuong", "cong trinh luan van thu cong ha luong", "cong trinh luan van thu cong suat luong", "cong trinh luan van thu dang nhat luong"

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