Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
thang cua » thong cua, hang cua, than cua
ho thiet » hoc thiet, hoa thiet, so thiet
tang cua » mang cua, hang cua, tang luan
cong van » cong vang, song van, cong tan
cong san » cong tac
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: ho thiet tach - hanh ((thang cua) or (tang cua)) dung ((cong van) OR (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thiet tach - hanh ((thang cua) OR (tang cua)) dung ((cong van) OR (cong san)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho thiet tach - hanh ((thang cua) or (tang cua)) dung ((cong van) OR (cong san)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - hanh ((thang cua) or (tang cua)) dung ((cong van) OR (cong san)) toan ban*.