Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
nhanh hung » thanh hung, nhanh hong, nhanh chuong
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua nhung » va nhung
hung cua » huong cua, chung cua, khung cua
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, chinh cau, nhanh cau
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet danh - nhanh hung cua nhung cong dan ((((chan cau) OR (can cau))) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - nhanh hung cua nhung cong dan ((((chan cau) OR (can cau))) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet danh - nhanh hung cua nhung cong dan ((((chan cau) OR (can cau))) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - nhanh hung cua nhung cong dan ((((chan cau) OR (can cau))) or (phan tu))*.