Perhaps you should try some spelling variations:
thiet hach » thien hach, thuyet hach, thiet hai
thanh tung » thanh cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban
cong san » cong tac
san co » ban co, sang cho
co cau » bo 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 hach - ((thanh trung) or (thanh tung)) ((cua hang) OR (cua dang)) cong san co cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet hach - ((thanh trung) OR (thanh tung)) ((cua hang) OR (cua dang)) cong san co cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet hach - ((thanh trung) or (thanh tung)) ((cua hang) OR (cua dang)) cong san co cau".
• Adding a wildcard symbol may retrieve word variants: hoc thiet hach - ((thanh trung) or (thanh tung)) ((cua hang) OR (cua dang)) cong san co cau*.