Perhaps you should try some spelling variations:
"cong trinh luat van thi hanh cua luong" » "cong trinh luat van thi hanh cu luong", "cong trinh luat van thi hanh cua huong", "cong trinh luat van thi hanh cua truong", "cong trinh luan van thi hanh cua luong", "cong trinh luat dan thi hanh cua luong", "cong trinh luat va thi hanh cua luong", "cong trinh luat van thi thanh cua luong", "cong trinh luat van thi manh cua luong", "cong trinh luat van thi hang cua luong", "cong trinh luat van thi hanh sua luong", "cong trinh luat van tai hanh cua luong", "cong trinh luat van thu hanh cua luong"
"cong trinh luat van thi dong chat luong" » "cong trinh luat van thi cong chat luong", "cong trinh luat van thi dung chat luong", "cong trinh luat van thi don chat luong", "cong trinh luan van thi dong chat luong", "cong trinh luat dan thi dong chat luong", "cong trinh luat va thi dong chat luong", "cong trinh luat van thai dong chat luong", "cong trinh luat van thi hong chat luong", "cong trinh luat van tai dong chat luong", "cong trinh luat van thu dong chat 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 luat van thi hanh cua luong") or ("cong trinh luat van thi dong chat luong"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cong trinh luat van thi hanh cua luong") OR ("cong trinh luat van thi dong chat luong")).
• Removing quotes may allow a broader search: (( cong trinh luat van thi hanh cua luong ) or ( cong trinh luat van thi dong chat luong )).
• Adding a wildcard symbol may retrieve word variants: (("cong trinh luat van thi hanh cua luong") or ("cong trinh luat van thi dong chat luong"))*.