Perhaps you should try some spelling variations:
"cong trinh luat van thu dung cua ban" » "cong trinh luan van thu dung cua ban", "cong trinh luat dan thu dung cua ban", "cong trinh luat ban thu dung cua ban", "cong trinh luat van thuy dung cua ban", "cong trinh luat van thuc dung cua ban", "cong trinh luat van thu dang cua ban", "cong trinh luat van thu dung luan ban", "cong trinh luat van thu dung cho ban", "cong trinh xuat van thu dung cua ban", "cong trinh luat ven thu dung cua ban", "cong trinh suat van thu dung cua ban"
"cong trinh luat va thu dung cua ban" » "cong trinh luat va thuy dung cua ban", "cong trinh luat va thuc dung cua ban", "cong trinh luat va thu dang cua ban", "cong trinh luat va thu dung luan ban", "cong trinh luat va thu dung cho ban", "cong trinh xuat va thu dung cua ban", "cong trinh luat ve thu dung cua ban", "cong trinh suat va thu dung cua ban", "cong trinh luat va tu dung cua ban", "cong trinh luat va thuat dung cua ban"

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 luat van thu dung cua ban") OR ("cong trinh luat va thu dung cua ban"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cong trinh luat van thu dung cua ban\") OR (\"cong trinh luat va thu dung cua ban\"))".
• Removing quotes may allow a broader search: (( cong trinh luat van thu dung cua ban ) OR ( cong trinh luat va thu dung cua ban )).
• Adding a wildcard symbol may retrieve word variants: (("cong trinh luat van thu dung cua ban") OR ("cong trinh luat va thu dung cua ban"))*.