Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
hanh hang » thanh hang, hang hang, hanh han
ho thiet » hoc thiet, hoa thiet, so thiet
cong san » cong tac
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
va nang » van nang, da nang, kha nang

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 hang ((va nang) OR (cam nang)) cong san ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thiet tach - hanh hang ((va nang) OR (cam nang)) cong san ((toan tai) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho thiet tach - hanh hang ((va nang) OR (cam nang)) cong san ((toan tai) or (toan ban))*".