Perhaps you should try some spelling variations:
thiet hach » thien hach, thuyet hach, chiet tach
thiet hai » thi hai, thien tai
tranh cua » doanh cua, manh cua
thiet bi » thiet ke
ban dong » van dong, bat dong, dan dong
dong dan » dong danh, duong dan, dong san
dan toan » van toan, dan than, manh toan
toan tap » toan 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 hach) or (((thiet hai) OR (thiet bi)))) - canh tranh cua ban dong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet hach) OR (((thiet hai) OR (thiet bi)))) - canh tranh cua ban dong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thiet hach) or (((thiet hai) OR (thiet bi)))) - canh tranh cua ban dong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet hach) or (((thiet hai) OR (thiet bi)))) - canh tranh cua ban dong dan toan tap*.