Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
hoc thiet » hoc thieu, hoc thuyet, hoc hien
canh manh » lanh manh, canh tranh, cach mang
cua thong » cua thuong, cua khong, cua tong
manh cua » doanh cua, ban cua
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan ban » van ban

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 tach - canh manh cua thong ((cong tan) OR (cong tac)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet tach - canh manh cua thong ((cong tan) OR (cong tac)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - canh manh cua thong ((cong tan) OR (cong tac)) toan ban*.