Perhaps you should try some spelling variations:
thuyet thiet » thuyet viet, thuat thiet, thuat nhiet
thep thiet » thep viet
nong cong » cong cong, tong cong, nang cong
hanh ban » thanh ban, hang ban, hanh san
cua nong » cua cong, cuu nong, cua dong
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thep thiet) OR (thuyet thiet)) tach - hanh ban cua nong cong dan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thep thiet) OR (thuyet thiet)) tach - hanh ban cua nong cong dan ((toan cau) OR (toan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thep thiet) OR (thuyet thiet)) tach - hanh ban cua nong cong dan ((toan cau) or (toan cao))*".